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Revised and adapted from "Irish Pedigrees" by John O'Hart, (Dublin 1892)
Volume 1, pg. 855. Volume 2, pg. 566.
As many of the ancient Irish
surnames are not recorded in O'Clery's or in MacFirbis's Genealogies, or in the
Linea Antiqua, or in the Betham Genealogical Collections, we have collected from
"The Topographical Poems of O'Dugan and O'Heerin,""The Tribes and Customs of
Hy-Fiachrach," and other works published by the Celtic and Archeological
Societies in Ireland, the following Irish family names, and the modern
anglicised forms which they assumed; (Hy-Fiachrach = descendants of Fiachra)
-The Name- | -Has been modernized as- |
| Clann Fhearghus | Fergus |
| Clan Shane (a Sept of the O'Farrells) | Shaen |
| MacAindris | Andrews, MacAndrew, Anderson |
| MacAnluain | Ganly |
| Mac an Bhainbh | Hogg. Hogge. Banff |
| MacBrehon | Judge |
| MacBlosky | MacCIosky, Closky |
| MacConluain | Conlan, Colwan |
| MacCosby | Foote("cos;"Irish, the foot) |
| MacCale (1) | ..... |
| MacCrossan | Crosby, Crosbie |
| MacCoinin | Cunniam, Cunnion, Canning |
| MacConghaola | Coneely |
| MacCiochain | Keeghan, Keegan, Cockane |
| MacCarrain | Currin, Curran |
| MacConboirne | Bourns |
| MacConcathraigh | MacCarrick |
| MacCionnaith | MacKenna (of the Meath Hy-Niall) |
| MacConleitrech | obsolete |
| MacCarrghanma | Carron, MacCarron, MacCarroon, MacCarhon, Carson |
| MacConin | Kennyon, Canning |
| MacCailleachain | Keelchan, Coward, Keelan, MacCallin |
| MacCuinn | Macken |
| MacEoghain | MacOwen, MacKeon |
| MacFirbis | Firbis, Forbes |
| MacFinnbhair | Maginver, Gaynor |
| MacGilli Bhain | White, Bean, Gilwaine |
| MacGilli-Bhuidh | MacAvee, Kilboy, Gilboy |
| MacGilla Chaise | Kilcash, Cash |
| MacGiolla-Duibh | Gilduff, Kilduff |
| MacGiolla Phoil | MacGilfoyle, Gilfoyle, Paul |
| MacGilla Kenny | Kilkenny |
| MacGilli-Riabhaig | Kilrea, MacIlrea, Gray |
| MacGilla tSamhais | MacIltavish, MacTavish |
| MacGila Sinin | Synan |
| MacGillifin | Gilfin, Gilpin, Gill |
| MacGilimir | Gilmer,Gillmor |
| MacGillimore | Merryman |
| MacGillicuskly | Cuskley |
| MacGiolla | Gill, Magill |
| MacGallogly | Ingoldsby |
| MacGiolla Fhalain | Phelan |
| MacGiolla-Cealaigh | Kilkelly, Killikelly |
| MacGilli Briein | Brickin |
| MacGuiggan | Maguiggan, Goodwin, Godwin |
| MacGunshenan | Magunshinan, Nugent, Leonard |
| MacLaighid | Lye, Leigh |
| MacLave | Hand ("lamh ;" Ir, a hand) |
| MacMurchada (of Ulster) | MacMorrow, MacMarray, Morell |
| MacMahon | Mathews, Fitzursula |
| MacNebo | Victory, Victoria |
| MacNamee | Meath, Mee |
| MacNeill | MacNeil |
| MacOdhrain | Magoran, Orum, Orme |
| MacOscar | Cosgrave, Costello |
| MacPartholain | Bat, Bats, Batson, Bateson |
| MacReachtagain | Rafter |
| MacSimoin | Sims, Simmes, Simpson, Simkins, Simcocks, Simon |
| MacSpeallane | Spenser |
| MacSpallane | Spenser |
| MacTaidhg | MacTague, MacTeig, Montague, Montagu |
| MacTyre, | Wolf, Wolfe |
| MacUaithnin | MacHoneen, Green, Greene, Tonyson, Tennyson |
| MacUlahairg | MacGolderick, Goderich, Golding, Goulding, Waller |
| Maclnogly | Ingoldsby (See "MacGallogly") |
| MagAedha | Magee |
| MagFlannagain | Flannagan |
| MagFhionnain | Gannon, Ginnane |
| MagFhiachra | McKeighry, Keary, Carey |
| MagLannagain | Lanigan |
| MagRodain | Grayden, Roden |
| Magilsinan | Magilsitnan |
| Muintir Ceallaigh | O'Kelly and Kelly, in Londonderry, |
| Muintir Lideadha | O'Liddy and Liddy |
| Muntir Ubain | Hoban |
| Murtagh | Mortimer |
| O'Airmeadhaigh | Armedy, Armidage, Armitage, Armytage |
| O'Aimirgin | Mergin, Bergin |
| O'Aodha, | in the county Mayo is generally anglicised Hughes. (2) |
| O'Banain | Bannan, Bannon |
| O'Baetheghaile | O'Boyle, Beahilly, Beatley, Beale |
| O'Barrain | Barrington |
| O'Banain | Banan |
| O'Bearga | Begar, Biggar, Bera |
| O'Beollain | Boland |
| O'Beirne | Briun |
| O'Birn | Brin, Bruen |
| O'Blighe | Blighe |
| O'Breithe | Broghie, Brophy |
| O'Bruadair | Broder, Broderick, Bradner, Brothers |
| O'Brogain | Brogan |
| O'Breen | O'Brien |
| O'Brislain | Brislane, Breslin |
| O'Breadhdha | Bray (of Imokilly, co Cork) |
| O'Brachain | Brahan |
| O'Broduibh | Brodiff, Brodie, Brody |
| O'Brien | Brine |
| O'Byrne | Leycester, Lester, Lyster, Warren |
| O'Caemhagain | Kevigan |
| O'Cathniadh | Kane |
| O'Cathain | Keane, Kane, Kyan, O'Keane |
| O'Caithniadh | Catny, Kane |
| O'Caolloaidhe | Cayley, Kaely, Keely |
| O'Cathasaigh | Casey |
| O'Caomhain | Keveny, Kevin, Kavanagh, Cowen, Cohen |
| O'Cain* (O'Koin] | Coyne, Koin, Kain, Kean, Keane |
| O'Camdhain | Camden, Caden |
| O'Cearnaigh | Kearney, Carney |
| O'Ceadfhada | Keating, Keatinge |
| O'Ceirin | Kerrin |
| O'Ceirin | Kearn, Kearins |
| O'Cearnachain | Kernaghan |
| O'Ceallaigh | Kelly |
| O'Ceathaigh | Keaty, Keating |
| O'Ceallachain | Callaghan of Erris |
| O'Chobhthaigh | Coffey, Coffee |
| O'Chosgraidh | Cosgrave |
| O'Ciarmhaic | Kirby, Berwick |
| O'Cinnfhaelaidh | Kinealy |
| O'Cinnchnambha | Kinnavy, Bones |
| O'Ciardha | Keary |
| O'Ciaragain | Kerrigan |
| O'Ciardha | Carey, Keary |
| O'Cindellain | Cunningham |
| O'Clumain | Coalman |
| O'Conbhuidhe | Conway, Convy |
| O'Conboirne | Bourns, Burns |
| O'Coilligh | Wood, Woods |
| O'Conaing | Gunning |
| O'Conor | Conyers |
| O'Congadhain, O'Conaighain and O'Connaghain | Cunnigan, Cunningham, Conway |
| O'Comhghain | Cowgan, Coogan |
| O'Conghaile | Connolly, Cunneely |
| O'Coilen | Collins, Collings |
| O'Connachtain | Connaughtan, Conattan |
| O'Conagan | Conyngham |
| O'Cornain | Corbett |
| O'Conaill | Connell, O'Connell |
| O'Coiglidh | Quigley |
| O'Connowe | Conway |
| O'Columain | Coleman |
| O'Coitil | Cottle |
| O'Cobhthaigh | Coffey, Cowhig |
| O'Creachain | Crehan, Greghan, Gehan, Graham |
| O'Cribbain | Corbett, Cribban |
| O'Criadhen | Creedan |
| O'Cuaghain | Gough |
| O'Cuain | Quan, Quaine, Coyne |
| O'Cuanain | Quinan, Coonan |
| O'Cumin | Cummin, Cummins |
| O'Cuinn | Quinn |
| O'Culaghaine | Coolahan, Coolacan |
| O'Deirg | Derrig, Durrig, Derrick |
| O'Discin | Dixon |
| O'Donchadha | Donoghue, Donaghy, Dunphy |
| O'Dorchaidhe | Dorcy, Dorcey, Dorsey, Darcy, D'Arcy(Galway), Darkey |
| O'Dowling | Du Laing, Laing |
| O'Drum | Drum, Drummond |
| O'Duibhdiorma | Diarmid, MacDermott |
| O'Dubhda | Q'Dowda |
| O'Duinchinn | Dunkin |
| O'Duibhagain | Duvegan, Dugan, Duggan |
| O'Duibhleargain | Dulleran |
| O'Duineadhaigh | Doney, Denny |
| O'Duanmhaigh | Duany, Devany |
| O'Duibhraic | Durack |
| O'Dunghaile | Donnelly |
| O'Duibhscuile | Duscully, Scully |
| O'Echtighearn | Ahern |
| O'Faghartaigh | Faherty |
| O'Faelechoin | Wolfe (See also " MacTyre") |
| O'Fearceallaighe | Farrelly |
| O'Feehily | Pickley, O'Feely |
| O'Feinneadha | Feeny |
| O'Fhuathmharain | Farran, Heverine |
| O'Fionnaghain | Finnegan |
| O'Finntigheam | Finneran |
| O'Fionain | O'Finan, Finan |
| O'Flannabhra | Flannery |
| O'Flaithri | Flattery |
| O'Flaitile | Flatly, Flatilly, Flattery |
| O'Floinn | Flynn |
| O'Flannghaile | Flannelly |
| O'Fodhladha | Foley (of Waterford) |
| O'Fraechain | French, Ffrench, Frenshe |
| O'Fuala | Foley |
| O'Fualairg | Fowler, Fuller |
| O'Gaoithin | Gehan, Gibson, Gettins |
| O'Gaibhtheachain | Gaughan, Gahan |
| O'Gadain | Goddan, Godwin, GOODWIN |
| O'Gathlaoich | Gately, Keightley, Catley |
| O'Gearadhain | Gearan, Geyrins |
| O'Gealigain | Galligan, Gealan |
| O'Gilin | Killin, Killeen, Culleen |
| O'Gloinin | Glennon, Gloin, Glinn |
| O'Gormghail | Gorman |
| O'Goirmghiallaigh (3) | Gormilly, Gormley, Grimley |
| O'Gowan | Smith |
| O'Gormog | Gorman |
| O'Griobbtha | Griffy, Griffin |
| O'Haughey | Haugh, Hoy, Hoey, Hawe, Howe |
| O'Hay | Hay, Hughes |
| O'Hease | Hussey, Oswell |
| O'Hooneen | Greene (See "MacUaithnin") |
| O'Hurley, | Harley |
| 'Kelaghan | Callaghan |
| O'Laodhog | Lee |
| O'Laitile | Little, Lyttle |
| O'Laoghain | Lane |
| O'Labhrahadha | Lavery |
| O'Lahiff | Guthrie, |
| O'Lairgnen | Largan, Lorigan, Legge |
| O'Laechaille | Leech, Lilly |
| O'Lachtnain | Loughnane, Loftus |
| O'Laighdiachain | Lydican |
| O'Learghusa | Larrisy, Leasy |
| O'Leannain | Lannen, Lennon, Leonard |
| O'Liathain | Lyons, Lee |
| O'Loingsigh | Lynsky, MaGloinsg, Lynch |
| O'Lorcain | Larkin, Larcom |
| O'Lochain | Longhan, Duck |
| O'Loingseachain | Lunshekaun |
| O'Luachair | Rushe |
| O'Luachduibh | Loody, Ludy |
| O'Luane | Lamb |
| O'Luain | Loane, Lamb |
| O'Luachaim | Luxom |
| O'Luachain | Price |
| O'Maoilchluiche | Gamble, Stone, Stoney |
| O'Mailina | Mallin |
| O'Maghnain | Magnan |
| O'Maoilfhiona | Molina |
| O'Marcachain | Markam, Horseman,Ryder, Ryding |
| O'Marcachain | Markam, Rider, Horseman |
| O'Maoileoin | Malone |
| O'Maoilruain | Mulroyne |
| O'Maoilbloghain | Mullowne, Mullowney, Malony |
| O'Maoilbhrenain | Mulrennan |
| O'Maonagh | Moynagh |
| O'Maoilfaghmhair | Milford, Fayre |
| O'Maoilcallain | Mullholan, Mullholand |
| O'Maoilraite | Mulratty, Ratten, Rait, Malet |
| O'Maoilgaoithe | Mulgeehy, Wynn, Wynne |
| O'Maoilruaidh | Mulroy, Roy |
| O'Mainnin | Mannion |
| O'Maoinaigh | Meeny, Mooney |
| O'Maoilaithin | Mullattin, Molohan |
| O'Maoilduan | Muldoon |
| O'Maoilcana | Malcan, Singer |
| O'Maoilchonaire | Mulconrey, Connery, Conroy, Conry |
| O'Mearadhaig | O'Meara, O'Mara |
| O'Mellain | Mellan, Millan, Mellon |
| O'Mordha | O'More |
| O'Morain | Moran, Morrin |
| O'Mongain | Mangan, Mongan, Mungan |
| O'Mochain | Moghan, Mohan |
| O'Mughroin | Moran |
| O'Mulclohy | Stone, Stoney |
| O'Mulfaver | Palmer |
| O'Muireadhaigh | Murray |
| O'Muineog | Monaghan |
| O'Murphy | Morphie |
| O'Mulfover | Milford |
| O'Murgally | Morley |
| O'Mullaville | Lavelle |
| O'Muirgheasa | Morrisy, Morris, Morrison |
| O'Mulrian | Murrian, Ryan |
| O'Muimhneachain | Minahan, Mynahan, Meenehan |
| O'Mulrony | Moroni, (of county Clare) |
| O'Murchada | Murphy |
| O'Mulligan | Baldwin |
| O'Neill | Neele, Neely |
| O'Nuadhain | Nuane, Noone, Noonan |
| O'Radubhain | Radwin, Ravan, Radden |
| O'Rabhartaigh | Rafferty |
| O'Riagain | Regan |
| O'Ronain | Ronan (Connaught), Ronayne (Munster) |
| O'Rothlain | Rolan, Rowland, Rowlan, Rowley, Rollan, Rollin |
| O'Rourke | Rooke |
| O'Ruidhain | Ruane, Rowan |
| O'Ruadhraigh | Rogers |
| O'Scannail | Seanlan |
| O'Seagha | O'Shea |
| O'Seachnasaigh | O'Shaughnessy |
| O'Sewell | Walker, Sewell |
| O'Seisnain | Sexton |
| O'Sedna | Shade |
| O'Seghdha | Shaw, Hawk, Shea |
| O'Shaughnessy | Sandys |
| O'Sionna | Fox, Seeny |
| O'Spealain | Spillaan, Spillaine |
| O'Suanaigh | Sunagh, Swanny |
| O'Sullivan | Silven, Silvers |
| O'Sumaghain | Somers |
| O'Tarpaigh | Tarpy, Torpy |
| O'Tackney | Tackit |
| O'Taichligha | Tully, Tilly |
| O'Teagha | Teague, Tighe |
| O'Tighearnaigh | Tierney |
| O'Tiompain | Tenpenny |
| O'Tighearnain | Tiernan |
| O'Toghdha | Toffey, Todd |
| O'Trehy | Foote (See "MacCoshy") |
| O'Tuathlain | Tolan, Toland, Thulis |
| O'Turrain | Troy |
| O'Tuathalain | Toland, Tolan |
| O'h-Eitegein | Magettigan |
| O'h-Aghmaill | HamiIl |
| O'h-Ailche | Halley, Ally |
| O'h-Eoghain | O'Howen, Owens |
| O'h-Iomhair | Howard, Ivers |
| O'h-Emeachain | Hermans, Meehan |
| O'h-Iarnain | Hernon |
| O'h-Uisgin | O'Hiskeen, O'Histeen, Hastings |
| O'h-Iomhair | Howard, Ivers, Ivor |
| O'h-Uallachain | MacUallachain, MacCuolahan, Nolan |
| O'h-Oireachtaigh | Heraghty, Geraghty |
| O'h-Oilmhec | Helvick, Helwick |
| O'h-Heraghty | MacGeraghty, Harrington |
| O'h-Uathmharain | Hamran, Horan, Heverine |
| O'h-Eidhin | O'Heyne, Hynes, etc. |
| O'h-Eochagain | Haughion |
| O'h-Eidhneachain | Heanaghan |
| O'h-Ir | O'Hir, O'Hayer, O'Hare, Hare |
| O'h-Enda | Henn |
| O'h-Aichir | O'Hehir, Hehir |
| O'h-Eimhirin | Herne |
| O'h-Fhnadha | Foody, Swift |
| O'h-Aidith | Hatty Hettv |
| O'h-Arain | Haran |
| O'h-Eana | Heany |
(1) "This is probably the family name now called MacHale".
Dr.O'Donovan.
(2) O'Aodha; In Connaught since the Cromwellian Settlement of Ireland, the O'
has been ommitted by most of the natives of that province. The Milesian gentry,
there, however, still use that prefix as a mark of distinction between
themselves and their co-relatives, the peasantry of the same race.
(3) O'Goirmghiallaigh; This Connaught family is distinct from the
O'Gairmleadhaigh (or Gormley) family of Ulster.
CELTIC FAMILIES
In MacFirbis's "Irish Genealogies" the following Celtic
names are designated "Maghaidh Saxonta" ("magadh: Irish;
mocking, jeering); meaning that it was only in jest
these names were said to be of Saxon origin:
| 1. AUCHINLEK | 15. GORDON | 29. LINDESAY |
| 2. BARCLAY | 16. GRAKANE | 30. LITTLE |
| 3. BARDE | 17. GRAY | 31. LUNDIE |
| 4. BISET | 18. GUTHRIE | 32. MURRAY |
| 5. BLAIRE | 19. HALIDAY | 33. NEWBIGGING |
| 6. BOYD | 20. HAY | 34. OLIPHANT |
| 7. CAMBELL | 21. IRELAND | 35. RAMSAY |
| 8. CLELAND | 22. JARDAN | 36. RUTHER |
| 9. CRAWFORD | 23. JOHNSTON | 37. RUTHVEN |
| 10. CARRIE | 24. KAR | 38. SOOT |
| 11. DASSE | 25. KEITH | 39. SCRIMAGER |
| 12. DOWGLAS | 26. KILLPATRICK | 40. SEBON |
| 13. DUN | 27. LAWDER | 41. TINTS |
| 14. FOORDE | 28. LENNOX | 42. WALLACE |
