by Mari Elspeth nic Bryan (Kathleen M. O'Brien)
© 2005-2008 by Kathleen M. O'Brien. All rights reserved.
Version 1.2, updated 30 September 2008
The headers in Woulfe are Gaelic. Many include a character with a punctum delens (which looks like a dot over the letter). Throughout this article, I have translated these characters as the letter, followed by a period. Since these characters are routinely transliterated as the letter with an h after it, I have also included the "h" transliteration in parentheses after each header listing.
For example, Woulfe lists the header Albanac.. By the notation c., I'm indicating that a punctum delens appears over the c. When listing this header, I've listed it as:
Albanac. (Albanach)with the standard transliteration form Albanach shown in parenthesis.
The vast majority of Anglicized Irish forms of "O" and "Mac" style surnames listed in Woulfe that date to temp. Elizabeth I - James I are listed as O [Root] and M'[Root].
It is likely that Woulfe (or one of his sources) has normalized at least some of these names to this format since other examples from the Patent Rolls of James I found in Ewen show the formats Mc[Root] and O'[Root].
Further, among the surnames listed by Woulfe are:
Anglicized Irish Surname Page Header MacAnthony 317 Mac Antoine MacGillafyndean 374 Mac Giolla F.earga (Mac Giolla Fhearga) MacMajoke 388 Mac Máig.eóc, Mac Máig.eóg (Mac Máigheóc, Mac Máigheóg) McCada 304 Mac Áda, Mac Ádaid. (Mac Áda, Mac Ádaidh) McGilliworyne 317 Mac Giolla Luait.rinn (Mac Giolla Luaithrinn) McGlyn 376 Mag F.loinn (Mag Fhloinn) Obuge 439 Ó Bogaig. (Ó Bogaigh) O'Derrie 498 Ó Doireid., Ó Doirid. (Ó Doireidh, Ó Doiridh) O'Diamain 496 Ó Diamáin O'Doveanna 514 Ó Duib.eam.na (Ó Duibheamhna) O'Glassnie 541 Ó Glaisne O'Largan 587 Ó Loirgneáin
Given these examples, it is likely that at least some of the forms that Woulfe lists as M'[Root] appeared in the original text as Mac[Root] or Mc[Root]. Similarly, it's likely that at least some of the forms that Woulfe lists as O [Root] appeared in the original text as O[root] or O'[Root].
| Anglicized form dated to temp. Eliz I - James I | Page | Header | Notes |
| A praye | 224 | a' P.réit. (a' Phréith) | |
| A Sloan | 646 | Ó Sluag.ad.áin, Ó Sluag.aid.ín, Ó Sluag.áin, Ó Sluaig.ín (Ó Sluaghadháin, Ó Sluaghaidhín, Ó Sluagháin, Ó Sluaighín) | |
| Aase | 219 | Ág.as (Ághas) | |
| Abbod | 219 | Abbóid | |
| Acollobert | 219 | a Colbard | |
| Adelard | 220 | Aid.leart (Aidhleart) | |
| Affay | 219 | a Fae | |
| Ailmar | 220 | Aig.lmear (Aighlmear) | |
| Ainglishe | 221 | Aingléis | |
| Albanagh | 222 | Albanac. (Albanach) | |
| Alcoc | 222 | Alcóc | |
| Alekoc | 222 | Alcóc | |
| Aleman | 222 | Alamán | |
| Alesaundre | 223 | Alsandair | |
| Aleyne | 220 | Ailéin | |
| Alisander | 223 | Alsandair | |
| Allaine | 220 | Ailéin | |
| Alleyne | 220 | Ailéin | |
| Allyne | 220 | Ailín | |
| Altoun | 223 | Altún | |
| Alwine | 220 | Ailín | |
| Ameros | 223 | Ambrós, Amrós, Amrus | |
| Andreu | 221 | Aindriú | |
| Andrewe | 221 | Aindriú | |
| Anglant | 221 | Aingleont | |
| Anglound | 221 | Aingleont | |
| Angylont | 221 | Aingleont | |
| Ankettill | 223 | Ancoitil | |
| Anton | 223 | Antóin, Antoine | |
| Aphaye | 219 | a Fae | |
| Apowell | 224 | a Paol | |
| Apprice | 224 | a Prís | |
| Apprise | 224 | a Prís | |
| Archebaud | 221 | Áirseabóid | |
| Archedekyn | 222 | Áirsdéicin | |
| Archibaud | 221 | Áirseabóid | |
| Arnolle | 224 | Arnóid | |
| Arnoud | 224 | Arnóid | |
| Arot | 224 | Aróid | |
| Arrot | 224 | Aróid | |
| Arstekin | 222 | Áirsdéicin | |
| Arthour | 224 | Artúr | |
| Arthure | 224 | Artúr | |
| Asbold | 222 | Áiseabóid | |
| Ashbould | 222 | Áiseabóid | |
| Aspoll | 222 | Áiseabóid | |
| Asshe | 219 | Ág.as (Ághas) | |
| Asshe | 222 | Ais | |
| Asteken | 222 | Áistéicin | |
| Astekine | 222 | Áistéicin | |
| Athelard | 220 | Aid.leart (Aidhleart) | |
| Austiyn | 577 | Oistín | |
| Ayleward | 220 | Aig.leart (Aighleart) | |
| Ayllard | 220 | Aid.leart (Aidhleart) | |
| Aylwert | 220 | Aig.leart (Aighleart) | |
| Aysh | 222 | Ais | |
| Ayshe | 222 | Ais | |
| Ayshpool | 222 | Áiseabóid | |
| Bacoun | 225 | Bacún | |
| Bagod | 225 | Bagóid | |
| Bagote | 225 | Bagóid | |
| Bakun | 225 | Bacún | |
| Baldone | 227 | Báldún | |
| Baliste | 226 | Bailiste | |
| Bared | 226 | Bairéid | |
| Baret | 226 | Bairéid | |
| Barneis | 228 | Bearnais | |
| Barnise | 228 | Bearnais | |
| Barnyshe | 228 | Bearnais | |
| Baroun | 228 | Barún | |
| Basnede | 226 | Baisnéid | |
| Basset | 226 | Baiséid | |
| Baudekin | 230 | Bóidcín | |
| Bawdekyn | 230 | Bóidcín | |
| Belewe | 228 | Beille, Beilliú | |
| Benet | 229 | Beinéid | |
| Berle | 231 | Boiréil | |
| Biset | 229 | Biséid | |
| Bleyne | 230 | Bléine | |
| Bloet | 230 | Blaod | |
| Blounket | 660 | Ploingcéid, Pluincéid, Pluingcéid | |
| Blowet | 230 | Blaod | |
| Bluet | 230 | Blaod | |
| Bodekine | 230 | Bóidcín | |
| Bonan | 232 | Buinneán | |
| Bonane | 232 | Buinneán | |
| Boone | 247 | de Bot.ún (de Bothún) | |
| Borel | 231 | Boiréil | |
| Boskagh | 231 | Boscac. (Boscach) | |
| Bossher | 233 | Búiséir | |
| Bostard | 233 | Bustárd | |
| Bostoke | 247 | de Bostóc | |
| Bottymer | 233 | Buitiméir | |
| Boucher | 233 | Búiséir | |
| Boudekyn | 230 | Bóidcín | |
| Boudon | 230 | Bódún | |
| Boudoun | 230 | Bódún | |
| Boudran | 232 | Búdrán | |
| Boudun | 230 | Bódún | |
| Bowdran | 232 | Búdrán | |
| Bowet | 233 | Búiteac. (Búiteach) | |
| Bowet | 250 | de Búit | |
| Boyde | 233 | Búiteac. (Búiteach) | |
| Boyde | 250 | de Búit | |
| Boydin | 230 | Bóidín | |
| Boydyn | 230 | Bóidín | |
| Boyt | 233 | Búiteac. (Búiteach) | |
| Boyt | 250 | de Búit | |
| Brabasun | 231 | Brabasún | |
| Brathnagh | 231 | Breat.nac. (Breathnach) | |
| Brayhenoc | 231 | Brannóc | |
| Brayhnock | 231 | Breannóc | |
| Braynoc | 231 | Brannóc | |
| Brehnagh | 231 | Breat.nac. (Breathnach) | |
| Brenoke | 231 | Breannóc | |
| Brethnagh | 231 | Breat.nac. (Breathnach) | |
| Breynoc | 231 | Breannóc | |
| Bricklea | 232 | Bruicléig., Bruicléit. (Bruicléigh, Bruicléith) | |
| Bridagh | 232 | Brídeac. (Brídeach) | |
| Brigaghe | 232 | Brigeac. (Brigeach) | |
| Briskoo | 232 | Brioscú | |
| Brittagh | 232 | Briteac. (Briteach) | |
| Bronicke | 231 | Brannóc | |
| Bronoke | 231 | Brannóc | |
| Bru | 249 | de Brug.a (de Brugha) | |
| Bryde | 232 | Bríde | |
| Budran | 232 | Búdrán | |
| Burdoun | 252 | de Burdún | |
| Burdun | 233 | Burdún | |
| Burell | 231 | Boiréil | |
| Burewe | 249 | de Brug.a (de Brugha) | |
| Burgeis | 233 | Buirgéis, Buirg.éis (Buirgéis, Buirghéis) | |
| Burys | 233 | Buirgéis, Buirg.éis (Buirgéis, Buirghéis) | |
| But | 247 | de Bot | |
| Cantoell | 234 | Canntual, Cantual | |
| Cantowle | 234 | Canntual, Cantual | |
| Carony | 326 | Mac Carrg.am.na (Mac Carrghamhna) | |
| Carrowny | 326 | Mac Carrg.am.na (Mac Carrghamhna) | |
| Carrune | 235 | Carrún | |
| Carun | 235 | Carrún | |
| Casmond | 321 | Mac Ásmuint | |
| Casse | 235 | Cas | |
| Chamber | 669 | Seambar, Seambars, Seambrac. (Seambar, Seambars, Seambrach) | |
| Chevere | 670 | Síb.ear (Síbhear) | |
| Chiver | 670 | Síb.ear (Síbhear) | |
| Clenche | 236 | Clinse | |
| Clinshe | 236 | Clinse | |
| Cnok | 255 | de Cnoc | |
| Cod | 236 | Coda | |
| Codde | 236 | Coda | |
| Cogane | 255 | de Cogán | |
| Col | 237 | Col | |
| Colchoun | 238 | Colc.ún (Colchún) | |
| Colman | 238 | Colmán | |
| Cote | 235 | Cat | |
| Coushine | 241 | Cúsín | |
| Craddok | 239 | Creadóc, Creadóg | |
| Cradok | 239 | Creadóc, Creadóg | |
| Creavagh | 239 | Craob.ac. (Craobhach) | |
| Cristor | 240 | Críostóir | |
| Croc | 240 | Cróc | |
| Crok | 240 | Cróc | |
| Cromall | 240 | Cromail | |
| Cushine | 241 | Cúsín | |
| Daundon | 282 | Dollard, Dollart | |
| Dawtone | 242 | Dátún | |
| de Arcy | 241 | Dairsig. (Dairsigh) | |
| de Ardis | 241 | Dairdis | |
| de Aundon | 282 | Dollard, Dollart | |
| de Aungers | 241 | Dáinséir | |
| de Autun | 242 | Dátún | |
| de Baa | 245 | de Bát | |
| de Bacoun | 242 | de Bacún | |
| de Barry | 244 | de Barra | |
| de Barton | 244 | de Bartún | |
| de Bartoun | 244 | de Bartún | |
| de Bathe | 245 | de Bát | |
| de Bec | 246 | de Beic | |
| de Bel | 246 | de Beil | |
| de Beletune | 245 | de Béalatún | |
| de Belynger | 225 | Bailinséir | |
| de Bernevale | 246 | de Bearnab.ál (de Bearnabhál) | |
| de Blakeham | 246 | de Blácam | |
| de Blancheville | 247 | de Bluinnsíol | |
| de Blauncheuill | 247 | de Bluinnsíol | |
| de Blythe | 247 | de Blag.d (de Blaghd) | |
| de Bohoun | 247 | de Bot.ún (de Bothún) | |
| de Bohun | 247 | de Bot.ún (de Bothún) | |
| de Bois | 252 | de Bús | |
| de Bolton | 247 | de Bolltun | |
| de Boneville | 250 | de Buinb.íol (de Buinbhíol) | |
| de Bostock | 247 | de Bostóc | |
| de Boulton | 247 | de Bolltun | |
| de Boys | 252 | de Bús | |
| de Boytoun | 243 | de Bad.tún (de Badhtún) | |
| de Brandon | 248 | de Brandún | |
| de Bray | 248 | de Brí | |
| de Braynok | 248 | de Breannóc | |
| de Bre | 248 | de Brí | |
| de Brechnok | 248 | de Breannóc | |
| de Bredone | 248 | de Bréadún | |
| de Bredun | 248 | de Bréadún | |
| de Bree | 248 | de Brí | |
| de Breton | 248 | de Briotún | |
| de Broghton | 248 | de Broc.tún (de Brochtún) | |
| de Broughton | 248 | de Broc.tún (de Brochtún) | |
| de Bruce | 249 | de Brús | |
| de Brugge | 248 | de Brig | |
| de Bruis | 249 | de Brús | |
| de Brune | 249 | de Brún | |
| de Brus | 249 | de Brús | |
| de Burdune | 252 | de Burdún | |
| de Burgo | 251 | de Búrd, de Búrca | |
| de Burton | 252 | de Burtún | |
| de Burtoun | 252 | de Burtún | |
| de Bury | 249 | de Brug.a (de Brugha) | |
| de Caher | 254 | de Cat.air (de Cathair) | |
| de Cantelon | 252 | de Canntalún | |
| de Cantewell | 252 | de Canntual, de Cantual | |
| de Canton | 253 | de Canntún | |
| de Cantwell | 252 | de Canntual, de Cantual | |
| de Cardif | 253 | de Carduib. (de Carduibh) | |
| de Carletoun | 253 | de Carltún | |
| de Carltoun | 253 | de Carltún | |
| de Carrew | 253 | de Carrún | |
| de Carricke | 253 | de Carraig | |
| de Carrig | 253 | de Carraig | |
| de Carron | 253 | de Carrún | |
| de Cassell | 252 | de Caiseal | |
| de Cather | 254 | de Cat.air (de Cathair) | |
| de Cathyr | 254 | de Cat.air (de Cathair) | |
| de Caunton | 253 | de Canntún | |
| de Cauntoun | 253 | de Canntún | |
| de Clare | 255 | de Clár | |
| de Clayton | 255 | de Cléatún | |
| de Clere | 255 | de Cléir | |
| de Clifford | 255 | de Cliofort | |
| de Clynton | 255 | de Cliontún | |
| de Clyntoun | 255 | de Cliontún | |
| de Cnocke | 255 | de Cnoc | |
| de Cogan | 255 | de Cogán | |
| de Corbaly | 255 | de Corb.aile (de Corbhaile) | |
| de Cottoune | 256 | de Cotún | |
| de Cotun | 256 | de Cotún | |
| de Crauford | 256 | de Cráfort | |
| de Creck | 256 | de Craig | |
| de Croftune | 256 | de Croc.tún (de Crochtún) | |
| de Croftus | 256 | de Croc.tas (de Crochtas) | |
| de Crosse | 256 | de Crúis | |
| de Cruce | 256 | de Crúis | |
| de Cusaak | 254 | de Cíom.sóg, de Ciúm.sóg (de Cíomhsóg, de Ciúmhsóg) | |
| de Cusack | 254 | de Cíom.sóg, de Ciúm.sóg (de Cíomhsóg, de Ciúmhsóg) | |
| de Daltune | 242 | Dalatún, Daltún | |
| de Dene | 270 | Denn | |
| de Douglas | 284 | Dub.g.las (Dubhghlas) | |
| de Dromgol | 257 | de Dromgúl | |
| de Durame | 257 | de Duram | |
| de Duvedale | 284 | Dub.dal (Dubhdal) | |
| de Evereux | 242 | Déab.rús (Déabhrús) | |
| de Faie | 257 | de Fae | |
| de Fardun | 245 | de B.eardún (de Bheardún) | |
| de Felda | 257 | de Fílde | |
| de Freyne | 258 | de Fréin, de Fréine | |
| de Freynes | 258 | de Fréins | |
| de Freyns | 258 | de Fréins | |
| de Fyneglas | 257 | de Fionng.las (de Fionnghlas) | |
| de Galbally | 258 | de Gallb.aile (de Gallbhaile) | |
| de Galloway | 258 | de Gaillid.e (de Gaillidhe) | |
| de Gallweia | 258 | de Gaillid.e (de Gaillidhe) | |
| de Gard | 259 | de Geárd | |
| de Gascoyn | 259 | de Gascún | |
| de Glanvilla | 259 | de Glainb.íol (de Glainbhíol) | |
| de Glen | 259 | de Glin | |
| de Glyne | 259 | de Glin | |
| de Goer | 258 | de G.aor (de Ghaor) | |
| de Gordon | 259 | de Górdún | |
| de Gorham | 260 | de Gúram | |
| de Graunt | 260 | de Grannt | |
| de Graye | 259 | de Grae | |
| de Grendun | 260 | de Grandún | |
| de Grene | 260 | de Graoin | |
| de Greve | 260 | de Gréib. (de Gréibh) | |
| de Grey | 259 | de Grae | |
| de Guer | 258 | de G.aor (de Ghaor) | |
| de Guher | 258 | de G.aor (de Ghaor) | |
| de Haia | 260 | de Hae | |
| de Halee | 261 | de Halb.uid.e (de Halbhuidhe) | |
| de Halton | 261 | de Háltún | |
| de Halywode | 260 | de Halab.óid (de Halabhóid) | |
| de Hameldon | 261 | de Hamaltún | |
| de Hampton | 261 | de Hamtún | |
| de Hamptun | 261 | de Hamtún | |
| de Hanburgo | 261 | de Hanburg.a (de Hanburgha) | |
| de Handbury | 261 | de Hanburg.a (de Hanburgha) | |
| de Haneberge | 261 | de Hanburg.a (de Hanburgha) | |
| de Haneberwe | 261 | de Hanburg.a (de Hanburgha) | |
| de Hay | 260 | de Hae | |
| de Haya | 260 | de Hae | |
| de Hedune | 262 | de Héadún | |
| de Herford | 262 | de Hearfort | |
| de Hindeberg | 262 | de Hionburg.a (de Hionburgha) | |
| de Hochton | 263 | de Hoc.tun (de Hochtun) | |
| de Hoghton | 263 | de Hoc.tun (de Hochtun) | |
| de Holeweye | 261 | de Halb.uid.e (de Halbhuidhe) | |
| de Horseye | 263 | de Hórsaig. (de Hórsaigh) | |
| de Hosey | 263 | de Hosae, de Húsae | |
| de Houghton | 263 | de Hoc.tun (de Hochtun) | |
| de Husee | 263 | de Hosae | |
| de Hyda | 262 | de Híde | |
| de Hynteberge | 262 | de Hionburg.a (de Hionburgha) | |
| de Hyntebrygh | 262 | de Hionburg.a (de Hionburgha) | |
| de Irland | 264 | de Írleont | |
| de Isle | 266 | de Liosla | |
| de Kenefec | 254 | de Cinip.éic (de Ciniphéic) | |
| de Kenefeg | 254 | de Cinip.éic (de Ciniphéic) | |
| de Kent | 254 | de Ceannt | |
| de Keppoc | 254 | de Ceapóc | |
| de Keppok | 254 | de Ceapóc | |
| de Kerdyff | 253 | de Carduib. (de Carduibh) | |
| de Kersey | 254 | de Céarsaig. (de Céarsaigh) | |
| de Ketyng | 254 | de Céitinn | |
| de Keusaac | 254 | de Cíom.sóg, de Ciúm.sóg (de Cíomhsóg, de Ciúmhsóg) | |
| de Kisshok | 254 | de Cíom.sóg, de Ciúm.sóg (de Cíomhsóg, de Ciúmhsóg) | |
| de la Hide | 241 | Dalait.íd (Dalaithíd) | |
| de Lane | 265 | de Léig.inn, de Léin (de Léighinn, de Léin) | |
| de Langetone | 264 | de Langtún | |
| de Langetoun | 264 | de Langtún | |
| de Lease | 265 | de Léis | |
| de Ledwich | 264 | de Léadús | |
| de Lee | 265 | de Liat. (de Liath) | |
| de Lega | 264 | de Léig. (de Léigh) | |
| de Lench | 266 | de Línse | |
| de Leon | 266 | de Líon | |
| de Lesse | 265 | de Léis | |
| de Lestre | 264 | de Leastair | |
| de Leycester | 264 | de Leastair | |
| de Leye | 264 | de Léig. (de Léigh) | |
| de Lincole | 266 | de Lioncól | |
| de Lincoll | 266 | de Lioncól | |
| de Linton | 266 | de Liontún | |
| de l'isula | 266 | de Liosla | |
| de Lofthouse | 267 | de Loc.tús (de Lochtús) | |
| de London | 267 | de Londún | |
| de Loundres | 267 | de Londra, de Londras | |
| de Lundon | 267 | de Londún | |
| de Lundun | 267 | de Londún | |
| de Lyons | 266 | de Líon | |
| de Manneville | 267 | de Móinb.íol (de Móinbhíol) | |
| de Mareys | 268 | de Moiréis | |
| de Marries | 268 | de Moiréis | |
| de Maundeville | 267 | de Móinb.íol (de Móinbhíol) | |
| de Miset | 267 | de Miséid | |
| de Mohun | 269 | de Mot.ún (de Mothún) | |
| de Mora | 269 | de Móra | |
| de Mortimer | 268 | de Moirtiméir | |
| de Morton | 269 | de Mórtún | |
| de Mortoun | 269 | de Mórtún | |
| de Mortun | 269 | de Mórtún | |
| de Moun | 269 | de Mot.ún (de Mothún) | |
| de Naas | 269 | de Nás | |
| de Nangle | 270 | de Nógla | |
| de Nasshe | 269 | de Nais | |
| de Nethe | 269 | de Néad. (de Néadh) | |
| de Netterville | 269 | de Neadraib.íol (de Neadraibhíol) | |
| de Neuville | 271 | de Nuib.íol (de Nuibhíol) | |
| de Neville | 271 | de Nuib.íol (de Nuibhíol) | |
| de Nongle | 270 | de Nógla | |
| de Norragh | 270 | de Norad. (de Noradh) | |
| de Norroy | 270 | de Norad. (de Noradh) | |
| de Nortune | 270 | de Nortún | |
| de Norwey | 270 | de Norad. (de Noradh) | |
| de Nougle | 270 | de Nógla | |
| de Nugent | 271 | de Núinnseann | |
| de Nungent | 271 | de Núinnseann | |
| de Paris | 271 | de Páiris | |
| de Parys | 271 | de Páiris | |
| de Pembrog | 272 | de Piombróg | |
| de Penbroc | 272 | de Piombróg | |
| de Pendergast | 273 | de Priondargás, de Priondragás | |
| de Peton | 272 | de Péatún | |
| de Peyton | 272 | de Péatún | |
| de Pirye | 272 | de Poire | |
| de Pomeray | 272 | de Pomrae | |
| de Portyngale | 272 | de Poirtingéil | |
| de Prendeville | 273 | de Prionnb.oil (de Prionnbhoil) | |
| de Preston | 272 | de Preastún | |
| de Raleigh | 273 | de Ráiléig. (de Ráiléigh) | |
| de Raley | 273 | de Ráiléig. (de Ráiléigh) | |
| de Ramsey | 274 | de Ramsaig. (de Ramsaigh) | |
| de Rath | 274 | de Rát. (de Ráth) | |
| de Rayleg | 273 | de Ráiléig. (de Ráiléigh) | |
| de Richemond | 274 | de Riseamonn | |
| de Ridal | 274 | de Riodal | |
| de Rocheford | 275 | de Rosfort | |
| de Rochefort | 275 | de Rosfort | |
| de Rochford | 275 | de Rosfort | |
| de Ros | 275 | de Ros | |
| de Rus | 275 | de Rús | |
| de Rush | 275 | de Ruis | |
| de Rydale | 274 | de Riodal | |
| de Salle | 276 | de Sál | |
| de Santry | 276 | de Saintreab | |
| de Sarsefield | 276 | de Sáirséil | |
| de Sauverne | 275 | de Sab.rainn (de Sabhrainn) | |
| de Scales | 277 | de Scéalas | |
| de Scoville | 277 | de Scoful | |
| de Screvine | 277 | de Scrib.in (de Scribhin) | |
| de Scryne | 277 | de Scrín | |
| de Sencler | 277 | de Sincléir | |
| de Seynclere | 277 | de Sincléir | |
| de Seyntlegger | 275 | de Sailigéir | |
| de Singleton | 277 | de Singealtún | |
| de Sinors | 277 | de Sionúir | |
| de Skelton | 277 | de Scealtún | |
| de Skrevyn | 277 | de Scrib.in (de Scribhin) | |
| de Slane | 278 | de Sláine | |
| de Spainne | 278 | de Spáine | |
| de St. John | 279 | de Suingean | |
| de St. Ledger | 275 | de Sailigéir | |
| de Stacepole | 278 | de Stacabúl, de Stacapúl | |
| de Stafford | 278 | de Stafort | |
| de Stanes | 278 | de Stáineas | |
| de Stanford | 279 | de Stanfort | |
| de Stanley | 279 | de Stainléig | |
| de Stanleye | 279 | de Stainléig | |
| de Stanton | 279 | de Stonndún | |
| de Stapeltoun | 278 | de Stábaltún | |
| de Stapulton | 278 | de Stábaltún | |
| de Stauntoun | 279 | de Stonndún | |
| de Stoke | 279 | de Stóc | |
| de Stokes | 279 | de Stóc | |
| de Sunors | 277 | de Sionúir | |
| de Suttoun | 279 | de Sutún | |
| de Swantun | 279 | de Suantún | |
| de Synors | 277 | de Sionúir | |
| de Tiwe | 280 | de Tiú | |
| de Townley | 280 | de Túinléig | |
| de Travers | 280 | de Tráibears | |
| de Trente | 280 | de Treant | |
| de Trim | 280 | de Truim | |
| de Troie | 280 | de Treó | |
| de Troya | 280 | de Treó | |
| de Troye | 280 | de Treó | |
| de Tryveres | 280 | de Tráibears | |
| de Tryvers | 280 | de Tráibears | |
| de Tuite | 280 | de Tiúit | |
| de Tywe | 280 | de Tiú | |
| de Uriel | 271 | de Oirg.iall (de Oirghiall) | |
| de Vaal | 243 | de Bál | |
| de Val | 243 | de Bál | |
| de Vale | 243 | de Bál | |
| de Veel | 245 | de B.éal (de Bhéal) | |
| de Ver | 246 | de B.éir (de Bhéir) | |
| de Verdoun | 245 | de B.eardún (de Bheardún) | |
| de Wale | 243 | de Bál | |
| de Waletone | 243 | de B.áltún (de Bháltún) | |
| de Walton | 243 | de B.áltún (de Bháltún) | |
| de Wees | 281 | de Uid.eas (de Uidheas) | |
| de Weleton | 245 | de Béalatún | |
| de Wiggemore | 281 | de Uigeamór | |
| de Wigmore | 281 | de Uigeamór | |
| de Wode | 247 | de B.óid (de Bhóid) | |
| de Wyz | 281 | de Uid.eas (de Uidheas) | |
| de Yrlond | 264 | de Írleont | |
| de Yrlonde | 264 | de Írleont | |
| Deasaghe | 264 | Déiseac. (Déiseach) | |
| Dece | 264 | Déise | |
| Deise | 264 | Déise | |
| Derriroe | 492 | Ó Dairb.re (Ó Dairbhre) | |
| Dilloun | 281 | Díolm.ain, Díolún (Díolmhain, Díolún) | |
| Dirland | 264 | de Írleont | |
| Dobbe | 281 | Dob | |
| Dobin | 282 | Doibín | |
| Dobyn | 282 | Doibín | |
| Dode | 281 | Doda | |
| Dodin | 282 | Doidín | |
| Doleo | 265 | de Liat. (de Liath) | |
| Dolfine | 282 | Doilfín | |
| Dongane | 283 | Dongán | |
| Donnarde | 282 | Doingeárd, Doinneárd | |
| Doundowne | 282 | Dondún, Donndún | |
| Dovedale | 284 | Dub.dal (Dubhdal) | |
| Dovedall | 284 | Dub.dal (Dubhdal) | |
| Dowedale | 284 | Dub.dal (Dubhdal) | |
| Drak | 283 | Drac. (Drach) | |
| Drogh | 283 | Drog., Drog.a (Drogh, Drogha) | |
| Dromgole | 257 | de Dromgúl | |
| Dromgoull | 257 | de Dromgúl | |
| Drou | 283 | Drog., Drog.a (Drogh, Drogha) | |
| Drue | 284 | Drú | |
| Druerye | 284 | Drúirid.e (Drúiridhe) | |
| Drumgole | 257 | de Dromgúl | |
| Drurie | 284 | Drúirid.e (Drúiridhe) | |
| Dullart | 282 | Dollard, Dollart | |
| Dylun | 281 | Díolm.ain, Díolún (Díolmhain, Díolún) | |
| Echingham | 285 | Eic.ingeam (Eichingeam) | |
| Eetmond | 284 | Easmonn | |
| Eilmer | 220 | Aig.lmear (Aighlmear) | |
| Elysandyr | 223 | Alsandair | |
| Englant | 221 | Aingleont | |
| Estmund | 284 | Easmonn | |
| Everod | 284 | Éab.róid (Éabhróid) | |
| Evrard | 284 | Éab.rárd (Éabhrárd) | |
| Evrett | 284 | Éab.róid (Éabhróid) | |
| Eylard | 220 | Aid.leart (Aidhleart) | |
| Eylward | 220 | Aig.leart (Aighleart) | |
| Fagane | 285 | Fágán | |
| Faie | 219 | a Fae | |
| Faie | 257 | de Fae | |
| Faltagh | 286 | Fáltac | |
| Fanyne | 285 | Fainín | |
| Farshinge | 286 | Fairsing | |
| Fauconer | 285 | Fácnar | |
| Faunte | 286 | Fannt | |
| Finamur | 287 | Fionamúr | |
| Firiter | 286 | Feiritéir, Feirtéir | |
| Firiter | 287 | Firitéir, Firtéir | |
| Fitun | 287 | Fiotún | |
| Flamang | 659 | Pléamonn, Pléimeann | |
| Flode | 287 | Flóid | |
| Floyde | 287 | Flóid | |
| Fonce | 288 | Fúinse | |
| Forlong | 289 | Furlong | |
| Forth | 288 | Fórd, Fórt | |
| Founce | 288 | Fúinse | |
| Freins | 258 | de Fréins | |
| Frensche | 258 | de Fréins | |
| Frensh | 258 | de Fréins | |
| Fresell | 288 | Friseal | |
| Freynshe | 258 | de Fréins | |
| Fronces | 662 | Próinséis | |
| Furestal | 289 | Fuireastal | |
| Fyan | 285 | Fag.an (Faghan) | |
| Fyan | 657 | P.ag.an (Phaghan) | |
| Fynnor | 287 | Fionnúir, Fionúir | |
| Gald | 290 | Gallda | |
| Galduf | 290 | Galldub. (Galldubh) | |
| Galdy | 290 | Gallda | |
| Galte | 290 | Gallda | |
| Gardener | 289 | Gáirnéir | |
| Garlon | 291 | Gearlún | |
| Garlone | 291 | Gearlún | |
| Garlowne | 291 | Gearlún | |
| Garnon | 291 | Gearnún | |
| Garrott | 291 | Gearóid | |
| Gastoun | 290 | Gastún | |
| Gastun | 290 | Gastún | |
| Geare | 290 | Géar | |
| Gernone | 291 | Gearnún | |
| Gernoun | 291 | Gearnún | |
| Gerot | 291 | Gearóid | |
| Gervaise | 290 | Gearb.ás (Gearbhás) | |
| Gervase | 290 | Gearb.ás (Gearbhás) | |
| Gillian | 292 | Gilleán | |
| Glanton | 292 | Gleantún | |
| Goch | 292 | Goc. (Goch) | |
| Godefraye | 293 | Got.fraid. (Gothfraidh) | |
| Godefrey | 293 | Got.fraid. (Gothfraidh) | |
| Godmund | 293 | Got.monn (Gothmonn) | |
| Goer | 258 | de G.aor (de Ghaor) | |
| Gogane | 292 | Gogán, Gógan | |
| Goggane | 292 | Gogán, Gógan | |
| Gogh | 292 | Goc. (Goch) | |
| Gold | 294 | Gúl | |
| Gole | 294 | Gúl | |
| Gooch | 292 | Goc. (Goch) | |
| Goole | 294 | Gúl | |
| Goore | 258 | de G.aor (de Ghaor) | |
| Goule | 294 | Gúl | |
| Gowe | 292 | Gob.a (Gobha) | |
| Gower | 258 | de G.aor (de Ghaor) | |
| Graas | 293 | Grás | |
| Grany | 293 | Gránda | |
| Grase | 293 | Grás | |
| Graunger | 293 | Gráinséir | |
| Grave | 260 | de Gréib. (de Gréibh) | |
| Grene | 260 | de Graoin | |
| Griffine | 294 | Grífín | |
| Gromwell | 294 | Gromail | |
| Gudmund | 293 | Got.monn (Gothmonn) | |
| Gule | 294 | Gúl | |
| Gwerre | 258 | de G.aor (de Ghaor) | |
| Habert | 298 | Hoibeárd | |
| Hackede | 295 | Hacaed, Haicéid | |
| Haket | 295 | Hacaed, Haicéid | |
| Halberd | 298 | Hoilbeabard | |
| Halvie | 261 | de Halb.uid.e (de Halbhuidhe) | |
| Hamelyn | 295 | Haimlín | |
| Hamleton | 261 | de Hamaltún | |
| Hamleton | 295 | Hamaltún | |
| Hammon | 295 | Hamon | |
| Hammound | 296 | Hámonn | |
| Hamon | 295 | Hamon | |
| Hamund | 296 | Hámonn | |
| Hancok | 296 | Hancóc | |
| Hardeyne | 295 | Háirdín | |
| Hardyn | 295 | Háirdín | |
| Harishe | 295 | Hairis | |
| Haroud | 296 | Haróid | |
| Harreis | 295 | Hairis | |
| Harrity | 552 | Ó hAireac.taig. (Ó hAireachtaigh) | |
| Harrod | 224 | Aróid | |
| Haukyn | 295 | Háicín | |
| Haward | 297 | Héib.eart (Héibheart) | |
| Hebbard | 298 | Hoibeárd | |
| Henbury | 262 | de Hionburg.a (de Hionburgha) | |
| Herbard | 298 | Hoireabard, Hoireabárd | |
| Herford | 262 | de Hearfort | |
| Herman | 296 | Hearman | |
| Herun | 296 | Héarún | |
| Heyron | 296 | Héarún | |
| Heyrun | 296 | Héarún | |
| Heyward | 297 | Héib.eart (Héibheart) | |
| Hibbard | 297 | Hibeárd | |
| Hibbard | 297 | Hiobárd | |
| Hobbard | 297 | Hobárd | |
| Hobbe | 297 | Hob | |
| Hobbocane | 297 | Hobacán | |
| Hobbok | 297 | Hobac, Hobuc | |
| Hobbuge | 297 | Hobac, Hobuc | |
| Hod | 297 | Hód | |
| Hode | 297 | Hód | |
| Hodney | 297 | Hodnae | |
| Hodynet | 297 | Hodnae | |
| Holywode | 260 | de Halab.óid (de Halabhóid) | |
| Holywode | 295 | Halab.óid (Halabhóid) | |
| Holywood | 260 | de Halab.óid (de Halabhóid) | |
| Holywood | 295 | Halab.óid (Halabhóid) | |
| Hoppe | 297 | Hob | |
| Horie | 263 | de Hór | |
| Hosteken | 298 | Hoisticín | |
| Husee | 299 | Húsae | |
| Hynebrye | 262 | de Hionburg.a (de Hionburgha) | |
| Irlond | 300 | Írleont | |
| Jak | 669 | Seac | |
| Jakes | 669 | Seac | |
| Joce | 669 | Seog.as (Seoghas) | |
| Johns | 670 | Seóns | |
| Joie | 670 | Seóig. (Seóigh) | |
| Jordane | 671 | Siúrdán, Siúrtán | |
| Josse | 669 | Seog.as (Seoghas) | |
| Joye | 669 | Seóg, Seóg.ac. (Seóg, Seóghach) | |
| Joye | 670 | Seóig. (Seóigh) | |
| Jurdane | 671 | Siúrdán, Siúrtán | |
| Kinselagh | 235 | Cinnsealac. (Cinnsealach) | |
| Kinshellagh | 235 | Cinnsealac. (Cinnsealach) | |
| Kot | 235 | Cat | |
| Kynnepeke | 254 | de Cinip.éic (de Ciniphéic) | |
| Lader | 300 | Láidir | |
| Laffane | 300 | Lafán | |
| Lageles | 301 | Laig.léis (Laighléis) | |
| Lagheles | 301 | Laig.léis (Laighléis) | |
| Lamberde | 301 | Laimbeart | |
| Lamport | 301 | Lamport | |
| Lanfant | 300 | Lafán | |
| Latin | 301 | Laitín | |
| Lattine | 301 | Laitín | |
| Laudir | 300 | Láidir | |
| Launt | 301 | Lannt | |
| Launte | 301 | Lannt | |
| Laweles | 301 | Laig.léis (Laighléis) | |
| le Blak | 246 | de Bláca | |
| le Blake | 246 | de Bláca | |
| le Bot | 247 | de Bot | |
| le But | 247 | de Bot | |
| le Waleis | 243 | de B.ailéis, de B.ailís, de B.ailis (de Bhailéis, de Bhailís, de Bhailis) | |
| le Waleys | 243 | de B.ailéis, de B.ailís, de B.ailis (de Bhailéis, de Bhailís, de Bhailis) | |
| Lea | 265 | de Liat. (de Liath) | |
| Leagh | 302 | Liat. (Liath) | |
| Leales | 302 | Líleas | |
| Leche | 302 | Liaig. (Liaigh) | |
| Leffaine | 300 | Lafán | |
| Lelasse | 302 | Líleas | |
| Lenche | 266 | de Línse | |
| Lenfaunt | 300 | Lafán | |
| Leonarde | 302 | Lionárd | |
| Levenach | 302 | Leam.nac. (Leamhnach) | |
| Lewes | 303 | Lob.aois (Lobhaois) | |
| Leynagh | 301 | Laig.neac. (Laighneach) | |
| Liales | 302 | Líleas | |
| Lincole | 266 | de Lioncól | |
| Lisle | 266 | de Liosla | |
| Lislie | 266 | de Liosla | |
| Listowne | 303 | Liostún | |
| Locard | 303 | Locárd | |
| Loccard | 303 | Locárd | |
| Lokard | 303 | Locárd | |
| Londra | 267 | de Londra, de Londras | |
| Londragh | 303 | Londrac. (Londrach) | |
| Londres | 267 | de Londra, de Londras | |
| Londry | 267 | de Londra, de Londras | |
| Loterell | 303 | Lotairéil, Lotrail | |
| Lowes | 303 | Lob.aois (Lobhaois) | |
| Lownt | 301 | Lannt | |
| Lowyes | 303 | Lob.aois (Lobhaois) | |
| Loyde | 302 | Laoide | |
| Loyde | 303 | Lóid | |
| Luterell | 303 | Lotairéil, Lotrail | |
| Lylles | 302 | Líleas | |
| Lynod | 302 | Lionóid | |
| Lynoid | 302 | Lionóid | |
| Lyntoun | 266 | de Liontún | |
| M' Geffrey | 404 | Mac Seafraid. (Mac Seafraidh) | |
| M'Abreham | 310 | Mac an B.reit.eam.an, Mac an B.reit.eam.naig., Mac an B.reit.im. (Mac an Bhreitheamhan, Mac an Bhreitheamhnaigh, Mac an Bhreithimh) | son of the judge |
| MacAnaleister | 313 | Mac an F.leastair (Mac an Fhleastair) | 'son of the fletcher', i.e., the arrow-featherer |
| MacAnthony | 317 | Mac Antoine | |
| MacCasmund | 321 | Mac Ásmuint | |
| MacCloone | 381 | Mac Glúin | |
| Macgillachair | 369 | Mac Giolla C.at.air (Mac Giolla Chathair) | |
| MacGillafyndean | 374 | Mac Giolla F.earga (Mac Giolla Fhearga) | |
| MacGirrenagastyr | 381 | Mac Girr an Ad.astair, Mac Girr an Ag.astair (Mac Girr an Adhastair, Mac Girr an Aghastair) | |
| MacGirrenastyr | 381 | Mac Girr an Ad.astair, Mac Girr an Ag.astair (Mac Girr an Adhastair, Mac Girr an Aghastair) | |
| MacGirrnaystar | 381 | Mac Girr an Ad.astair, Mac Girr an Ag.astair (Mac Girr an Adhastair, Mac Girr an Aghastair) | |
| M'Acherin | 357 | Mac Eac.t.ig.eirn (Mac Eachthigheirn) | |
| Machirleginn | 363 | Mac F.irléig.inn (Mac Fhirléighinn) | |
| Macingill | 314 | Mac an G.oill (Mac an Ghoill) | son of the foreigner |
| Mackmawe | 388 | Mac Máig.e (Mac Máighe) | |
| Mackmawe-Condon | 388 | Mac Máig.eóc, Mac Máig.eóg (Mac Máigheóc, Mac Máigheóg) | patronymic surname assumed by a branch of the family of Condon in East Cork and Waterford. |
| Macmaghan | 391 | Mac M.at.ain (Mac Mhathain) | |
| MacMajoke | 388 | Mac Máig.eóc, Mac Máig.eóg (Mac Máigheóc, Mac Máigheóg) | patronymic surname assumed by a branch of the family of Condon in East Cork and Waterford. |
| M'Acrossane | 311 | Mac an C.rosáin (Mac an Chrosáin) | son of the rhymer |
| MacSpallane | 408 | Mac Spealáin, Mac Spealláin | |
| MacSpollane | 408 | Mac Spealáin, Mac Spealláin | |
| M'Adegain | 312 | Mac an Deagáin, Mac an Degánaig. (Mac an Deagáin, Mac an Degánaigh) | son of the dean |
| M'Adegany | 312 | Mac an Deagáin, Mac an Degánaig. (Mac an Deagáin, Mac an Degánaigh) | son of the dean |
| M'Aden | 305 | Mac Áidín | |
| M'Adin | 305 | Mac Áidín | |
| Madock | 414 | Madóc, Madóg | |
| Madoge | 414 | Madóc, Madóg | |
| M'Adrwy | 312 | Mac an Druaid. (Mac an Druaidh) | son of the druid or "magician" |
| Magaffney | 419 | Mag F.ac.tna (Mag Fhachtna) | |
| M'Agaloglie | 313 | Mac an G.allóglaig. (Mac an Ghallóglaigh) | |
| Maganay | 415 | Mag Annaid. (Mag Annaidh) | |
| Maganye | 415 | Mag Annaid. (Mag Annaidh) | |
| Magaraghan | 421 | Mag Garac.áin (Mag Garacháin) | |
| M'Agayll | 313 | Mac an G.aill (Mac an Ghaill) | son of the foreigner |
| Mageaghrane | 418 | Mag Eac.ráin (Mag Eachráin) | |
| Magearrye | 419 | Mag F.earad.aig. (Mag Fhearadhaigh) | |
| Magennill | 421 | Mag F.ionng.ail (Mag Fhionnghail) | |
| Magennore | 420 | Mag F.ionnb.airr (Mag Fhionnbhairr) | |
| Magennure | 420 | Mag F.ionnb.airr (Mag Fhionnbhairr) | |
| Magenor | 420 | Mag F.ionnb.airr (Mag Fhionnbhairr) | |
| Magenura | 421 | Mag F.ionnb.arra (Mag Fhionnbharra) | |
| Magettegane | 418 | Mag Eiteagáin | |
| M'Agholy | 356 | Mac Eac.m.ílead.a, Mac Eac.m.ílid. (Mac Eachmhíleadha, Mac Eachmhílidh) | |
| M'Agill | 314 | Mac an G.oill (Mac an Ghoill) | son of the foreigner |
| Magillane | 366 | Mac Gileáin | |
| Magillerane | 379 | Mac Giollaráin | |
| Magitegen | 418 | Mag Eiteagáin | |
| Maglaghy | 422 | Mag Lait.im. (Mag Laithimh) | |
| Maglanan | 423 | Mag Leannáin | |
| Maglarent | 422 | Mag Lab.raint (Mag Labhraint) | |
| Maglaughy | 421 | Mag F.lait.im. (Mag Fhlaithimh) | |
| Maglavey | 421 | Mag F.lait.im. (Mag Fhlaithimh) | |
| Maglavey | 422 | Mag Lait.im. (Mag Laithimh) | |
| Maglen | 421 | Mag F.loinn (Mag Fhloinn) | |
| Maglinane | 423 | Mag Leannáin | |
| Maglinchie | 423 | Mag Loingsig. (Mag Loingsigh) | |
| Maglinne | 421 | Mag F.loinn (Mag Fhloinn) | |
| Magloan | 373 | Mac Giolla Eóin | |
| Maglowrine | 422 | Mag Lab.raid.ín (Mag Labhraidhín) | |
| Maglyne | 421 | Mag F.loinn (Mag Fhloinn) | |
| Magnel | 428 | Maingnéir | |
| Magnell | 428 | Maingnéir | |
| Magollricke | 427 | Mag Ualg.airg (Mag Ualghairg) | |
| Magorchie | 417 | Mac D.orc.aid., Mag D.orc.aid.e (Mac Dhorchaidh, Mag Dhorchaidhe) | |
| Magoughegan | 418 | Mag Eoc.agáin (Mag Eochagáin) | |
| Magourrtie | 426 | Mag Rob.artaig. (Mag Robhartaigh) | |
| Magowghegan | 418 | Mag Eoc.agáin (Mag Eochagáin) | |
| Magowlricke | 427 | Mag Ualg.airg (Mag Ualghairg) | |
| M'Agowne | 314 | Mac an G.ob.ann (Mac an Ghobhann) | son of the smith |
| M'Agoyle | 313 | Mac an G.aill (Mac an Ghaill) | son of the foreigner |
| Magranachan | 425 | Mag Reannac.áin (Mag Reannacháin) | |
| Magranaill | 424 | Mag Rag.naill, Mag Rág.naill (Mag Raghnaill, Mag Rághnaill) | |
| Magranchane | 425 | Mag Reannac.áin (Mag Reannacháin) | |
| Magranechan | 425 | Mag Reannac.áin (Mag Reannacháin) | |
| Magrany | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magrawley | 424 | Mag Rag.allaig. (Mag Raghallaigh) | |
| Magrein | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magrene | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magreny | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magriellassy | 425 | Mag Raillg.uis, Mag Riallg.usa (Mag Raillghuis, Mag Riallghusa) | |
| Magrina | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magriny | 424 | Mag Raig.ne, Mag Ráig.ne (Mag Raighne, Mag Ráighne) | |
| Magroice | 425 | Mag Raois, Mag Raosa | |
| Magrorick | 426 | Mag Ruad.raic (Mag Ruadhraic) | |
| Magrowry | 426 | Mag Ruaid.rí (Mag Ruaidhrí) | |
| Magrwrick | 426 | Mag Ruad.raic (Mag Ruadhraic) | |
| Maguffe | 417 | Mag D.uib. (Mag Dhuibh) | |
| Maguier | 427 | Mag Uid.ir (Mag Uidhir) | |
| Maguirin | 427 | Mag Uid.rín (Mag Uidhrín) | |
| Magwain | 417 | Mag D.ub.áin (Mag Dhubháin) | |
| M'Akolly | 311 | Mac an C.oilig. (Mac an Choiligh) | |
| M'Alaster | 306 | Mac Alastair | |
| M'Alastrom | 306-307 | Mac Alastruim | |
| M'Alastrum | 306-307 | Mac Alastruim | |
| Malclerk | 430 | Móicléir | |
| M'Alesandre | 307 | Mac Alsandair | |
| M'Alexander | 307 | Mac Alsandair | |
| M'Aline | 305 | Mac Ailín | |
| M'Alline | 305 | Mac Ailín | |
| Mallot | 429 | Málóid | |
| Malode | 429 | Málóid | |
| M'Alylly | 305 | Mac Ailg.ile (Mac Ailghile) | |
| M'Amaster | 315 | Mac an M.áig.istir (Mac an Mháighistir) | son of the master |
| M'Amore | 348 | Mac Dáib.id. Mór, Mac D.áib.id. Mór (Mac Dáibhidh Mór, Mac Dháibhidh Mór) | |
| M'an Abba | 308 | Mac an Abbad. (Mac an Abbadh) | son of the abbot |
| M'an Erle | 314 | Mac an Iarla | son of the earl |
| M'Anaboy | 308 | Mac Anabad.a (Mac Anabadha) | |
| M'Anavero | 306 | Mac Ainm.ire (Mac Ainmhire) | |
| M'Anchelly | 311 | Mac an C.oilig. (Mac an Choiligh) | |
| Manclerk | 430 | Móicléir | |
| M'Anclery | 311 | Mac an C.léirig. (Mac an Chléirigh) | son of the clerk |
| M'Ancoyllew | 338 | Mac Conc.oile, Mac Conc.oillead. (Mac Conchoile, Mac Conchoilleadh) | |
| Mandefill | 431 | Móinb.íol (Móinbhíol) | |
| Mandevill | 431 | Móinb.íol (Móinbhíol) | |
| M'Anelly | 313 | Mac an F.ilead., Mac an F.ilid. (Mac an Fhileadh, Mac an Fhilidh) | son of the poet |
| M'Anenany | 336 | Mac Conanaonaig. (Mac Conanaonaigh) | |
| M'Anhoggy | 338 | Mac Conc.ogaid (Mac Conchogaid) | |
| M'Anleone | 340 | Mac Conluain | |
| M'Anlevy | 355 | Mac D.uinns.léib.e (Mac Dhuinnshléibhe) | |
| M'Anloghie | 340 | Mac Conloc.a (Mac Conlocha) | |
| M'Anloyne | 340 | Mac Conluain | |
| M'Anna | 316 | Mac Anna | |
| M'Anna | 316 | Mac Annaid. (Mac Annaidh) | |
| M'Annoll | 343 | Mac Conulad. (Mac Conuladh) | |
| M'Annovoy | 308 | Mac Anabad.a (Mac Anabadha) | |
| M'Anonany | 336 | Mac Conanaonaig. (Mac Conanaonaigh) | |
| M'Anrack | 316 | Mac Annraic | |
| Mansfild | 431 | Móinb.íol (Móinbhíol) | |
| M'Anullo | 343 | Mac Conulad. (Mac Conuladh) | |
| M'Anyerkaye | 337 | Mac Conc.earca (Mac Conchearca) | |
| Mao | 428 | Máig.iú (Máighiú) | |
| M'aogh-Condon | 388 | Mac Máig.eóc, Mac Máig.eóg (Mac Máigheóc, Mac Máigheóg) | patronymic surname assumed by a branch of the family of Condon in East Cork and Waterford. |
| Map | 429 | Máp | |
| Markys | 429 | Marcus | |
| M'Arrassie | 360 | Mac F.earg.usa (Mac Fhearghusa) | |
| M'Art | 306 | Mac Airt | |
| M'Artan | 320 | Mac Artáin | |
| M'Artane | 320 | Mac Artáin | |
| M'Arte | 306 | Mac Airt | |
| Martel | 431 | Moirtéil | |
| Martell | 431 | Moirtéil | |
| Martyne | 428 | Máirtín | |
| Masoun | 429 | Masún | |
| Matheu | 428 | Maitiú | |
| M'Attye | 318 | Mac an tSaoi | son of the scholar |
| Mauclerc | 430 | Móicléir | |
| Mauclere | 430 | Móicléir | |
| Mauclerk | 430 | Móicléir | |
| M'Aughelie | 356 | Mac Eac.m.ílead.a, Mac Eac.m.ílid. (Mac Eachmhíleadha, Mac Eachmhílidh) | |
| Mauncell | 431 | Móinséil | |
| Maunsfield | 431 | Móinb.íol (Móinbhíol) | |
| M'Aveely | 315 | Mac an M.ílead.a (Mac an Mhíleadha) | son of the knight |
| M'Aveny | 305 | Mac Aib.ne (Mac Aibhne) | |
| Mawe | 428 | Máig.iú (Máighiú) | |
| M'Awnly | 316 | Mac Annlaoib. (Mac Annlaoibh) | |
| Mayon | 428 | Mág.ún (Mághún) | |
| Mayowe | 428 | Máig.iú (Máighiú) | |
| M'Baron | 309 | Mac an B.arúin (Mac an Bharúin) | son of the baron |
| M'Beagh | 321 | Mac Beat.a, Mac Beat.ad. (Mac Beatha, Mac Beathadh) | |
| M'Berrickerey | 322 | Mac Biort.agra (Mac Biorthagra) | |
| M'Birehagree | 322 | Mac Biort.agra (Mac Biorthagra) | |
| M'Birragra | 322 | Mac Biort.agra (Mac Biorthagra) | |
| M'Birrekry | 322 | Mac Biort.agra (Mac Biorthagra) | |
| M'Birryhaggery | 322 | Mac Biort.agra (Mac Biorthagra) | |
| M'blosgaid | 322 | Mac B.oscaid. (Mac Bhoscaidh) | |
| M'blosgaigh | 322 | Mac B.oscaid. (Mac Bhoscaidh) | |
| M'Boyhin | 321 | Mac B.aoit.ín (Mac Bhaoithín) | |
| M'Braddyn | 415 | Mag B.radáin (Mag Bhradáin) | |
| M'Brade | 322 | Mac Brádaig. (Mac Brádaigh) | |
| M'Bradie | 322 | Mac Brádaig. (Mac Brádaigh) | |
| M'Brady | 322 | Mac Brádaig. (Mac Brádaigh) | |
| M'Bran | 323 | Mac Brain | |
| M'Branane | 323 | Mac Branáin | |
| M'Brandon | 323 | Mac Breandáin | |
| M'Brandone | 323 | Mac Breandáin | |
| M'Branon | 323 | Mac Branáin | |
| M'Breane | 323 | Mac Braoin | |
| M'Brehon | 310 | Mac an B.reit.eam.an, Mac an B.reit.eam.naig., Mac an B.reit.im. (Mac an Bhreitheamhan, Mac an Bhreitheamhnaigh, Mac an Bhreithimh) | son of the judge |
| M'Brehuna | 310 | Mac an B.reit.eam.an, Mac an B.reit.eam.naig., Mac an B.reit.im. (Mac an Bhreitheamhan, Mac an Bhreitheamhnaigh, Mac an Bhreithimh) | son of the judge |
| M'Bren | 323 | Mac Brain | |
| M'Brenan | 323 | Mac Branáin | |
| M'Brewne | 323 | Mac Braoin | |
| M'Brian | 323 | Mac B.riain (Mac Bhriain) | |
| M'Broder | 415 | Mag B.ruadair (Mag Bhruadair) | |
| M'Broder | 324 | Mac Bruadair | |
| M'Brodie | 324 | Mac Bruaidead.ha (Mac Bruaideadhha) | |
| M'Brodyne | 324 | Mac Bruaidín | |
| M'Brouddie | 324 | Mac Bruaidead.ha (Mac Bruaideadhha) | |
| M'Broudy | 324 | Mac Bruaidead.ha (Mac Bruaideadhha) | |
| M'Brune | 323 | Mac Braoin | |
| M'Bruodyne | 324 | Mac Bruaidín | |
| M'Caba | 324 | Mac Cába | |
| M'Caddane | 305 | Mac Adáin | |
| M'Caele | 383 | Mac Haol | |
| M'Cafely | 356 | Mac Eac.m.ílead.a, Mac Eac.m.ílid. (Mac Eachmhíleadha, Mac Eachmhílidh) | |
| M'Cafferchie | 356 | Mac Eac.m.araig. (Mac Eachmharaigh) | |
| M'Cafferkie | 356 | Mac Eac.m.araig. (Mac Eachmharaigh) | |
| M'Caghie | 356 | Mac Eac.ad.a, Mac Eac.aid. (Mac Eachadha, Mac Eachaidh) | |
| M'Cahall | 328 | Mac Cat.ail (Mac Cathail) | |
| M'Cahane | 328 | Mac Cat.áin (Mac Catháin) | |
| M'Cahill | 328 | Mac Cat.ail (Mac Cathail) | |
| M'Cahir | 329 | Mac Cat.aoir (Mac Cathaoir) | |
| M'Cahire | 329 | Mac Cat.aoir (Mac Cathaoir) | |
| M'Cale | 328 | Mac Cat.ail (Mac Cathail) | |
| M'Calerie | 367 | Mac Giolla Arrait. (Mac Giolla Arraith) | |
| M'Calery | 367 | Mac Giolla Arrait. (Mac Giolla Arraith) | |
| M'Callenan | 325 | Mac Callanáin | |
| M'Callerie | 379 | Mac Giolla Riab.aig. (Mac Giolla Riabhaigh) | |
| M'Calline | 325 | Mac Cailín | |
| M'Callredocker | 349 | Mac D.áil re Doc.air (Mac Dháil re Dochair) | |
| M'Callvagh | 325 | Mac Calb.aig. (Mac Calbhaigh) | |
| M'Calradocker | 349 | Mac D.áil re Doc.air (Mac Dháil re Dochair) | |
| M'Calreaghe | 379 | Mac Giolla Riab.aig. (Mac Giolla Riabhaigh) | |
| M'Calreogh | 379 | Mac Giolla Riab.aig. (Mac Giolla Riabhaigh) | |
| M'Camacke | 411 | Mac T.ómuic (Mac Thómuic) | |
| M'Cane | 357 | Mac Eáin | |
| M'Cangellye | 334 | Mac Coing.eallaig. (Mac Coingheallaigh) | |
| M'Canine | 334 | Mac Coinín | |
| M'Canna | 316 | Mac Anna | |
| M'Canna | 316 | Mac Annaid. (Mac Annaidh) | |
| M'Canna | 326 | Mac Canna | |
| M'Cannan | 325 | Mac Canann | |
| M'Canny | 326 | Mac Cannaid. (Mac Cannaidh) | |
| M'Canricke | 316 | Mac Annraic | |
| M'Cantully | 318 | Mac an Tuile | |
| M'Cantully | 390 | Mac M.aoltuile (Mac Mhaoltuile) | |
| M'Carbery | 325 | Mac Cairbre | |
| M'Carbry | 325 | Mac Cairbre | |
| M'Carhie | 327 | Mac Cárt.aig. (Mac Cárthaigh) | |
| M'Carhig | 327 | Mac Cárt.aig. (Mac Cárthaigh) | |
| M'Carley | 360 | Mac F.earg.aile (Mac Fhearghaile) | |
| M'Carny | 330 | Mac Cearnaig. (Mac Cearnaigh) | |
| M'Carran | 330 | Mac Cearáin | |
| M'Carrane | 330 | Mac Cearáin | |
| M'Carrane | 331 | Mac Ciaráin | |
| M'Carrell | 360 | Mac F.earg.ail (Mac Fhearghail) | |
| M'Carrelly | 360 | Mac F.earg.aile (Mac Fhearghaile) | |
| M'Carrhon | 326 | Mac Carrg.am.na (Mac Carrghamhna) | |
| M'Carrowle | 330 | Mac Cearb.aill (Mac Cearbhaill) | |
| M'Cartane | 320 | Mac Artáin | |
| M'Cartane | 328 | Mac Cartáin | |
| M'Cartayne | 328 | Mac Cartáin | |
| M'Cartyn | 328 | Mac Cartáin | |
| M'Carvell | 330 | Mac Cearb.aill (Mac Cearbhaill) | |
| M'Carwell | 330 | Mac Cearb.aill (Mac Cearbhaill) | |
| M'Cashie | 334 | Mac Coise | |
| M'Cashine | 325 | Mac Caisín | |
| M'Cashy | 334 | Mac Coise | |
| M'Casie | 329 | Mac Cat.asaig. (Mac Cathasaigh) | |
| M'Cassan | 328 | Mac Casáin | |
| M'Cassarlie | 328 | Mac Casarlaig. (Mac Casarlaigh) | |
| M'Cassin | 325 | Mac Caisín | |
| M'Caughwell | 329 | Mac Cat.m.aoil (Mac Cathmhaoil) | |
| M'Caveat | 348 | Mac D.aib.éid (Mac Dhaibhéid) | |
| M'Cavog | 347 | Mac D.ab.óc, Mac D.ab.óg, Mac D.ab.uc, Mac D.ab.uic (Mac Dhabhóc, Mac Dhabhóg, Mac Dhabhuc, Mac Dhabhuic) | |
| M'Cavoke | 347 | Mac D.ab.óc, Mac D.ab.óg, Mac D.ab.uc, Mac D.ab.uic (Mac Dhabhóc, Mac Dhabhóg, Mac Dhabhuc, Mac Dhabhuic) | |
| M'Cavy | 348 | Mac D.áib.id. (Mac Dháibhidh) | |
| M'Cawill | 329 | Mac Cat.m.aoil (Mac Cathmhaoil) | |
| M'Cawque | 347 | Mac D.ab.óc, Mac D.ab.óg, Mac D.ab.uc, Mac D.ab.uic (Mac Dhabhóc, Mac Dhabhóg, Mac Dhabhuc, Mac Dhabhuic) | |
| M'Cawys | 410 | Mac Tám.ais (Mac Támhais) | |
| M'Cawyshe | 410 | Mac Tám.ais (Mac Támhais) | |
| McCada | 304 | Mac Áda, Mac Ádaid. (Mac Áda, Mac Ádaidh) | |
| M'Ceagharan | 357 | Mac Eac.ráin (Mac Eachráin) | |
| McGilliworyne | 376 | Mac Giolla Luait.rinn (Mac Giolla Luaithrinn) | |
| McGlyn | 421 | Mag F.loinn (Mag Fhloinn) | |
| M'Chassane | 328 | Mac Casáin | |
| M'Christall | 345 | Mac Criostail | |
| M'Christeine | 346 | Mac Cristín | |
| M'Christell | 345 | Mac Criostail | |
| M'Christyne | 346 | Mac Cristín | |
| M'Clanachy | 363 | Mac F.lannc.ad.a, Mac F.lannc.aid. (Mac Fhlannchadha, Mac Fhlannchaidh) | |
| M'Clanaghan | 386 | Mac Leannac.áin (Mac Leannacháin) | |
| M'Clanaghy | 363 | Mac F.lannc.ad.a, Mac F.lannc.aid. (Mac Fhlannchadha, Mac Fhlannchaidh) | |
| M'Clanchy | 363 | Mac F.lannc.ad.a, Mac F.lannc.aid. (Mac Fhlannchadha, Mac Fhlannchaidh) | |
| M'Claneghan | 386 | Mac Leannac.áin (Mac Leannacháin) | |
| M'Clanky | 363 | Mac F.lannc.ad.a, Mac F.lannc.aid. (Mac Fhlannchadha, Mac Fhlannchaidh) | |
| M'Clansy | 363 | Mac F.lannc.ad.a, Mac F.lannc.aid. (Mac Fhlannchadha, Mac Fhlannchaidh) | |
| M'Claverine | 422 | Mag Lab.raid.ín (Mag Labhraidhín) | |
| M'Clerie | 331 | Mac Cléirig. (Mac Cléirigh) | |
| M'Cloghor | 332 | Mac Cloc.aire (Mac Clochaire) | |
| M'Clone | 381 | Mac Glúin | |
| M'Clonnye | 332 | Mac Cluanaig. (Mac Cluanaigh) | |
| M'Clooane | 381 | Mac Glúin | |
| M'Closkie | 322 | Mac B.oscaid. (Mac Bhoscaidh) | |
| M'Clowne | 381 | Mac Glúin | |
| M'Cnavin | 332 | Mac Cnáim.ín (Mac Cnáimhín) | |
| M'Coag | 347 | Mac D.ab.óc, Mac D.ab.óg, Mac D.ab.uc, Mac D.ab.uic (Mac Dhabhóc, Mac Dhabhóg, Mac Dhabhuc, Mac Dhabhuic) | |
| M'Cochlane | 332 | Mac Coc.láin (Mac Cochláin) | |
| M'Coddan | 305 | Mac Adáin | |
| M'Coddan | 324 | Mac Cadáin | |
| M'Coddane | 324 | Mac Cadáin | |
| M'Codo | 397 | Mac Óda | |
| M'Cody | 397 | Mac Óda | |
| M'Coenill | 351 | Mac D.om.naill (Mac Dhomhnaill) | |
| M'Cogane | 333 | Mac Cogad.áin, Mac Cogáin (Mac Cogadháin, Mac Cogáin) | |
| M'Cogerane | 333 | Mac Cogaráin | |
| M'Coghegan | 358 | Mac Eoc.agáin (Mac Eochagáin) | |
| M'Coghie | 358 | Mac Eoc.aid. (Mac Eochaidh) | |
| M'Coghlane | 332 | Mac Coc.láin (Mac Cochláin) | |
| M'Cohy | 358 | Mac Eoc.aid. (Mac Eochaidh) | |
| M'Coinny | 334 | Mac Coinnig. (Mac Coinnigh) | |
| M'Coisht | 397 | Mac Oiste | |
| M'Coiste | 397 | Mac Oiste | |
| M'Coke | 347 | Mac D.ab.óc, Mac D.ab.óg, Mac D.ab.uc, Mac D.ab.uic (Mac Dhabhóc, Mac Dhabhóg, Mac Dhabhuc, Mac Dhabhuic) | |
| M'Cole | 336 | Mac Com.g.aill (Mac Comhghaill) | |
| M'Cole | 353 | Mac D.ub.gaill (Mac Dhubhgaill) | |
| M'Colla | 335 | Mac Colla | |
| M'Collagh | 335 | Mac Colla | |
| M'Colle | 335 | Mac Colla | |
| M'Colletane | 333 | Mac Codlatáin | |
| M'Colleve | 355 | Mac D.uinns.léib.e (Mac Dhuinnshléibhe) | |
| M'Collgan | 335 | Mac Colgan | |
| M'Collimet | 414 | Mac Uilliméid | |
| M'Colline | 333 | Mac Coilín | |
| M'Collitan | 333 | Mac Codlatáin | |
| M'Collman | 335 | Mac Colmáin | |
| M'Collone | 340 | Mac Conluain | |
| M'Collrick | 412 | Mac Ualg.airg (Mac Ualghairg) | |
| M'Colly | 335 | Mac Colla | |
| M'Colwan | 340 | Mac Conluain | |
| M'Com | 411 | Mac T.óm (Mac Thóm) | |
| M'Come | 411 | Mac T.óm (Mac Thóm) | |
| M'Comin | 334 | Mac Coimín | |
| M'Comyn | 334 | Mac Coimín | |
| M'Conalaye | 339 | Mac Cong.alaig. (Mac Conghalaigh) | |
| M'Conave | 343 | Mac Cons.nám.a (Mac Conshnámha) | |
| M'Conborney | 337 | Mac Conboirne | |
| M'Conchaa | 337 | Mac Conc.at.a (Mac Conchatha) | |
| M'Conchogrye | 338 | Mac Conc.oigc.ríc.e (Mac Conchoigchríche) | |
| M'Concroe | 338 | Mac Conc.rad.a (Mac Conchradha) | |
| M'Cone | 336 | Mac Com.d.ain (Mac Comhdhain) | |
| M'Congall | 339 | Mac Congail, Mac Congaile | |
| M'Congillye | 334 | Mac Coing.eallaig. (Mac Coingheallaigh) | |
| M'Conick | 341 | Mac Conm.aic (Mac Conmhaic) | |
| M'Conill | 351 | Mac D.om.naill (Mac Dhomhnaill) | |
| M'Conine | 334 | Mac Coinín | |
| M'Conley | 342 | Mac Connla, Mac Connlaod.a (Mac Connla, Mac Connlaodha) | |
| M'Conly | 342 | Mac Connla, Mac Connlaod.a (Mac Connla, Mac Connlaodha) | |
| M'Conmara | 341 | Mac Conmara | |
| M'Conmay | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Conmea | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Conna | 342 | Mac Connaid. (Mac Connaidh) | |
| M'Conna | 352 | Mac D.onnc.ad.a, Mac D.onnc.aid. (Mac Dhonnchadha, Mac Dhonnchaidh) | |
| M'Connagh | 352 | Mac D.onnc.ad.a, Mac D.onnc.aid. (Mac Dhonnchadha, Mac Dhonnchaidh) | |
| M'Connally | 339 | Mac Cong.alaig. (Mac Conghalaigh) | |
| M'Connell oge | 336 | Mac Conaill Óig | |
| M'Connella | 334 | Mac Coing.eallaig. (Mac Coingheallaigh) | |
| M'Conney | 342 | Mac Connaid. (Mac Connaidh) | |
| M'Connigan | 342 | Mac Connagáin | |
| M'Connley | 342 | Mac Connla, Mac Connlaod.a (Mac Connla, Mac Connlaodha) | |
| M'Connogher | 337 | Mac Conc.ob.air (Mac Conchobhair) | |
| M'Connoghor | 337 | Mac Conc.ob.air (Mac Conchobhair) | |
| M'Connolly | 339 | Mac Cong.alaig. (Mac Conghalaigh) | |
| M'Connor | 337 | Mac Conc.ob.air (Mac Conchobhair) | |
| M'Conogho | 352 | Mac D.onnc.ad.a, Mac D.onnc.aid. (Mac Dhonnchadha, Mac Dhonnchaidh) | |
| M'Conoher | 337 | Mac Conc.ob.air (Mac Conchobhair) | |
| M'Conough | 342 | Mac Connm.aig. (Mac Connmhaigh) | |
| M'Conough | 352 | Mac D.onnc.ad.a, Mac D.onnc.aid. (Mac Dhonnchadha, Mac Dhonnchaidh) | |
| M'Conowe | 342 | Mac Connm.aig. (Mac Connmhaigh) | |
| M'Conraghe | 342 | Mac Conrat.a (Mac Conratha) | |
| M'Conraye | 342 | Mac Conrat.a (Mac Conratha) | |
| M'Conrie | 342 | Mac Conraoi | |
| M'Conrowe | 343 | Mac Conrub.a (Mac Conrubha) | |
| M'Conry | 342 | Mac Conraoi | |
| M'Conryde | 343 | Mac Conriada | |
| M'Considine | 343 | Mac Consaidín | |
| M'Convale | 341 | Mac Conm.aoil (Mac Conmhaoil) | |
| M'Convay | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Convea | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Convey | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Conwaie | 341 | Mac Conmead.a, Mac Conm.eada (Mac Conmeadha, Mac Conmheada) | |
| M'Conwaile | 341 | Mac Conm.aoil (Mac Conmhaoil) | |
| M'Conwell | 341 | Mac Conm.aoil (Mac Conmhaoil) | |
| M'Conwicke | 341 | Mac Conm.aic (Mac Conmhaic) | |
| M'Cony | 342 | Mac Connaid. (Mac Connaidh) | |
| M'Coode | 412 | Mac Uaid | |
| M'Cooe | 332 | Mac Cob.t.aig. (Mac Cobhthaigh) | |
| M'Cooel | 353 | Mac D.ub.gaill (Mac Dhubhgaill) | |
| M'Coogan | 358 | Mac Eoc.agáin (Mac Eochagáin) | |
| M'Coole | 353 | Mac D.ub.gaill (Mac Dhubhgaill) | |
| M'Corboy | 344 | Mac Corrbuid.e (Mac Corrbuidhe) | |
| M'Corby | 344 | Mac Corrbuid.e (Mac Corrbuidhe) | |
| M'Corcrane | 344 | Mac Corcráin | |
| M'Corishe | 360 | Mac F.eórais, Mac F.eóruis (Mac Fheórais, Mac Fheóruis) | |
| M'Corkan | 344 | Mac Corcáin | |
| M'Corkane | 344 | Mac Corcáin | |
| M'Corkrane | 344 | Mac Corcráin | |
| M'Cormaine | 381 | Mac Gormáin | |
| M'Corr | 344 | Mac Corra, Mac Corraid. (Mac Corra, Mac Corraidh) | |
| M'Correy | 344 | Mac Corra, Mac Corraid. (Mac Corra, Mac Corraidh) | |
| M'Corrine | 344 | Mac Corraid.ín (Mac Corraidhín) | |
| M'Cosdallowe | 397 | Mac Oisdealb., Mac Oisdealb.aig. (Mac Oisdealbh, Mac Oisdealbhaigh) | |
| M'Cosegrave | 344 | Mac Coscraig. (Mac Coscraigh) | |
| M'Cosquyr | 398 | Mac Oscair | |
| M'Cossrichan | 344 | Mac Coscrac.áin (Mac Coscracháin) | |
| M'Costalighe | 397 | Mac Oisdealb., Mac Oisdealb.aig. (Mac Oisdealbh, Mac Oisdealbhaigh) | |
| M'Costegan | 345 | Mac Costagáin | |
| M'Costegane | 345 | Mac Costagáin | |
| M'Costegine | 398 | Mac Oisticín, Mac Oistigín | |
| M'Costellowe | 397 | Mac Oisdealb., Mac Oisdealb.aig. (Mac Oisdealbh, Mac Oisdealbhaigh) | |
| M'Costigine | 397-8 | Mac Oisticín, Mac Oistigín | |
| M'Costikine | 397 | Mac Oisticín, Mac Oistigín | |
| M'Costy | 397 | Mac Oiste | |
| M'Cottir | 398 | Mac Oitir | |
| M'Cottir | 335 | Mac Coitir | |
| M'Cottyr | 398 | Mac Oitir | |
| M'Cougald | 353 | Mac D.ub.gaill (Mac Dhubhgaill) | |
| M'Coulaghan | 412 | Mac Uallac.áin (Mac Uallacháin) | |
| M'Coulray | 346 | Mac Cúilriab.aig. (Mac Cúilriabhaigh) | |
| M'Cowade | 412 | Mac Uaid | |
| M'Cowane | 336 | Mac Com.d.ain (Mac Comhdhain) | |
| M'Cowart | 346 | Mac Cuarta, Mac Cuairt | |
| M'Cowgall | 353 | Mac D.ub.gaill (Mac Dhubhgaill) | |
| M'Cowla | 343 | Mac Conulad. (Mac Conuladh) | |
| M'Cowley | 343 | Mac Conulad. (Mac Conuladh) | |