-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 |