Christian Name and Surnames in Irish
Christian Names

BOYS
Gabriel - Gaibriél
Garrett - Gearóid
Garvan - Garbhán
Gay - Gaibriél
Geoffrey - Séafra
George - Seoirse
Gerald - Gearalt
Gerard - Gearard
Gibbon - Giobún
Gilbert - Gilbeirt
Gilbride - Giolla Bhríde
Gildea - Giolla Dé
Gill(esa) - Giolla Íosa
Gilvarry - Giolla Bhearaigh
Glasney - Glaisne
Godfrey - Gothraidh
Gordan - Gordan
Gorry - Gothraidh
Gregory - Gréagóir

GIRLS
Gabrielle - Gaibriél
Geraldine - Gearóidin
Gertrude (Gertie) - Gráinne
Gloria - Glóir
Gobnet - Gobnait
Gormlaith - Gormlaith g. Gormlatha
Grace - Cráinne
Surnames
Gaan - Ó Gacháin
Gabbett - Gabóid
Gaff (MacGagh, Gaillimh) - Mag Eathach
Mac Gaffey - Mac Gaibhidh
Mac Gaffigan - Mag Eachagáin
(O) Gaffigan (Gavigan) - Ó Gáifeacháin
Mac Gaffin - Mac Dhuifinn
Gaffney - Ó Gamhna
Mac Gaffrey - Mac Gafraidh
Mac Gaggy - Mag Eachaidh
Mac Gagh - Mac Eathach
(O) Gahagan - Mag Eochagáin
Mac Gahan - Mag Eacháin
(O) Gahan - Ó Gacháin
Mac Gaheran - Mag Eachráin
Mac Gahern - Mag Eachráin
(Mac) Gahey - Mag Eachaidh
Mac Gahran - Mag Eachráin
Gaine - Ó Géibhinn
Gainer - Mag Fhionnbhairr
Gaitens - Mag Eiteagáin
Galbally - de Gallbhaile
Galbriath - Mac an Bhreatnaigh
Mac Gale - Mac Cathail
Gale - Mac an Ghaill
Galesby - Mac Giolla Easpaig
Mac Galey (Gawley) - Mac Amhalaí
Gall (Gaule) - Mac an Ghaill
Mac Gall - Mac Camhaoil
(O) Gallagher - Ó Gallchóir
Gallahue - Ó Gallchú
(O) Gallen - Ó Gaillín
(Mac) Gallery - Mac Giolla Laoire (An Clár)
(Mac) Gallery - Mac Giolla Riabhaigh
(O) Galligan - Ó Gealagáin
(O) Gallina(gh) - Ó Gailineach
(O) Gallivan - Ó Gealbháin
(Mac) Gallogly - Mac an Ghallóghlaigh
(O) Gallon - Ó Galáin
(Gall(o)way - Gaillí
Galt - Gallda
(O) Galvin - Ó Gealbháin
Galway - Gaillí
Galway - de Gaillí
Gamble - Gamal
Gamlin - Gaimlín
Gammel - Gamal
(Mac) Gammon - Gambún
Ganagher - Mac Dhuineachair
(Mac) Ganley - Mag Sheanlaoich
Mac Gann - Mag Annaidh
Gannissy - Mag Aonasa
(Mac) Gannon - Mag Fhionnáin
Gantly - Mag Sheanlaoich
(O) Gara - Ó Gadhra
Mac Gara(g)han - Mac Garacháin
(Mac) Garahy - Mag Fhearaigh
Mac Garaty - Mac Aireachtaigh
Garde - Geard
Gardiner - Gairnéir
Gargan - Ó Geargáin
Garity - Mag Oireachtaigh
Garlan(d) - Gearlann
Mac Garr - Mac an Gheairr
Garraghan - Mag Aracháin
(Mac) Garraher - Mag Fhearchair
Mac Garran - Mag Aracháin
Mac Garrell - Mag Fhearail
(Mac) Garrett - Mac Gearóid
O’Garriga - Ó Gearaga
(Mac) Garrigan - Mac Geargáin
Mac Garrigle - Mag Fheargail
Mac Garrity - Mag Aireachtaigh
Mac Garroll - Mag Fhearail
(Mac) Garry - Mag Fhearaigh
(Mag) Gar(t)lan(d) - Mac Gearlann
(O) Garvan - Ó Garbháin
Mac Garvey - Mac Gairbheith
(O) Garvey - Ó Gairbhith
(O) Garvin Ó Gairbhín
Gascoigne - de Gascún
Mac Gaskell - Mag Ascaill
Gaskin - de Gascún
Gasson - Ó Gusáin
Gaston - Gastún
Gatchell - Gaisteal
Gately - Ó Gatlaoich
Gates - de Gheata
Gatlin - Mag Eiteagáin
Gattins - Mag Eiteagáin
Mac Gaugh - Mag Eathach
(O) Gaughan - Ó Gacháin
Mac Gaughey - Mag Eachaidh
Gaughney - Mag Fhachtna
Mac Gauige - Mac Eachaidh
Gaughran - Mag Eachráin
Gaul(e) - Mac an Ghaill
Mac Gauley - Mag Amhalaí
Gault - Gallda
Mac Gauran - Mag Shamhráin
Gauslin - Góislín
(O) Gaussen - Ó Gusáin
(O) Gavaghan - Ó Gaibhneacháin
(O) Gavan (Gavin) - Ó Gábháin
Mac Gaver - Mac Éimhir
Mac Gavick - Mag Dhabhaic
(Mac) Gavigan - Mac Gaibheacháin
Gavin - Ó Gáibhín
Mac Gavock - Mac Dhabhóc
(Mac) Gaw - Mag Adhaimh
Mac Gawley - Mac Amhalaí
Mac Gawran - Mag Shamhráin
Gay - Mac Giolla Dé
Gayer - Mac an Gheairr
Gaynard - Ó Gánaird
(Mac) Gaynor - Mag Fhionnbhairr
Mac Geady - Mag Céadaigh
Geagan - Mac Eochagáin
Mac Geagh - Mag Eathach
Gealon - Ó Gialláin
Mac Gean - Mac Gaoithín
(O) Geane - Ó Géibhinn
(Mac) Geaney - Mac Géibheannaigh
(O) Geaney - Ó Géibheannaigh
(Mac) Geanor - Mag Fhionnbhairr
Mac Geany - Mac Éanna
Gearn(s) - Ó Géaráin
(Mac) Gearty - Mag Oireachtaigh
Mac Geary - Mac Gadhra
(O) Geary - Ó Gadhra
(O) Geaveney - Ó Géibheannaigh
Mac Geaveny - Mac Géibheannaigh
(Mac) Gee - Mag Aoidh
(Mac) Geehan - Mac Gaoithín (Thuaidh)
(O) Geehan - Ó Gaoithín
Mac Geehee - Mac Gaoithe
(O) Geelan - Ó Gialláin
Mac Geeney - Mac Géibheannaigh
Mac Geer - Mac an Gheairr
Mac Geever - Mag Íomhair
(Mac) Gegan (Geogan) - Mac Eochagáin
(Mac) Geharan - Mag Eachráin
Mac Gellan - Mac Gealáin
Gellan(d) - Ó Gealáin
Mac Gellick - Mag Uilic
Gelvarry - Mac Giolla Bhearaigh
Mac Genis - Mag Aonasa
Gennagh - Mag Gineáith
Gennell - Mag Fhionnail
Mac Geoghegan - Mac Eochagáin
(O) Geoghery - Ó Gothraidh
Mac Geough - Mag Eochaidh
(Mac) Geown (Geon) - Mag Eoghain
(Mac) Geraghty - Mag Oireachtaigh
(O) Geran - Ó Géaráin
Gerard - Gearard
German - Gearmán
Germon - Gearmann
Gernon - Gearnún
Mac Gerr - Mac an Ghirr
Mac Gerrigan - Mac Geargáin
Mac Gerry - Mag Fhearaigh
(Mac) Gerty - Mag Oireachtaigh
Gervase - Gearbhás
Gethin - Mag Eiteagáin
Mac Getrick - Mag Shitric
Mac Gettigan - Mag Eiteagáin
Gettins - Mag Eiteagáin
Getty - Mag Eitigh
Ghagan - Mag Eachagáin
Ghee - Mag Aoidh
Ghegan - Mag Eochagáin
Mac Ghoon - Mac Gabhann
Gibb - Gib
(Mac) Gibben - Mag Fhibín
Gibbing(s) - Mac Giobúin
Mac Gibbon - Mac Giobúin
(O) Giblin - Ó Gibealláin
Mac Gibney - Mac Gibne
Gibney - Ó Gibne
Gibsey - Ó Gibealláin
Gibson - Mac Gib
Gibulawn - Ó Gibealláin
Mac Giff - Mac Dhuibh
Griffin - Mac Dhuifinn
Gifney - Ó Gamhna
Mac Gihan - Mac Gaoithín
Gihon (Guihen) - Ó Gaoithín
Gilbert - Gilbeirt
Gilber(t)son - Mac Gilbeirt
Gilbey (O)Gilboy - Ó Giolla Bhuí
(Mac) Gilbride - Mac Giolla Bhríde
(Mac) Gilchrist - Mac Giolla Chríost
(Mac) Gildea - Mac Giolla Dé
(Mac) Gildowney - Mac Gillla Domhnaigh
(Mac) Gilduff - Mac Gilla Dhuibh
Giles (Gaillimh) - Mac Goill
Giles - Ó Glaisne
Gilfeather - Mac Giolla Pheadair
(Mac) Gilfillan - Mac Giolla Fhaoláin
(Mac) Gilfoyle - Mac Giolla Phóil
(O) Gilgan - Ó Giollagáin
(Mac) Gilgar - Mac Giolla Ghearr
(Mac) Gilgrinn - Mac Giolla Ghrinn
(Mac) Gilgunn - Mac Gillla Dhoinn
Mac Gilgunn - Mac Gillla Ghunna
Mac Gilharry - Mac Giolla Charraigh
(Mac) Gilheany - Mac Gillla Chainnigh
(Mac) Gilhool - Mac Giolla Chomhaill
(Mac) Gilhooly - Mac Giolla Shúiligh
(Mac) Gilhooly - Mac Gillla Ghuala
Gilkelly - Mac Giolla Cheallaigh
Gilkeson - Mag Uilcín
Mac Gill - Mac Giolla
Gill - Mac an Ghaill
(Mac) Gill - Mac an Ghoill
Mac Gillacowan - Mac Giolla Chomain
Mac Gillacuddy - Mac Giolla Ghuda
Mac Gillan - Mac Gileáin
(O) Gillan(d) - Ó Giolláin
Mac Gillanders - Mac Giolla Aindréis
Gillaspy - Mac Giolla Easpaig
Mac Gilldowie - Mac Giolla Dúthaigh
(Mac) Gilleece - Mac Giolla Íosa
(O) Gilleen - Ó Gilín
(O) Gilleen - Ó Gillín
Gilleland - Mac Giolla Fhaoláin
Gilleran - Mac Giollaráin
(Mac) Gilleraj - Mac Giollaráin
(Mac) Gillespie - Mac Giolla Easpaig
Mac Gillian - Mac Gileáin
(Mac) Gillick - Mag Uilic
(Mac) Gilligan - Mac Giollagáin (Thuaidh)
(O) Gillian - Ó Giollagáin
(Gillilan(d) - Mac Giolla Fhaoláin
Gillinan - Mac Giolla Fhionnáin
Gillinnion - Mac Giolla Fhinnéin
Gillis - Mac Giolla Íosa
Gillivan - Mac Giolla Bháin
Mac Gillivray - Mac Giolla Bhrátha
Gillon - Ó Giolláin
Gilloon - Mac Giolla Eoin
(Mac) Gilloran - Mac Giolla Luaithrinn
Gilloway - Mac Giolla Bhuí
Gillowly - Mac Giolla Ghuala
Mac Gillreavy - Mac Giolla Riabhaigh
Mac Gilly - Mac an Choiligh
Mac Gillycuddy - Mac Giolla Chuda
Mac Gilmartin - Mac Giolla Mhártain
Gilmary - Mac Giolla Mhuire
Gilmer - Mac Ghiolla Mhir
(Mac) Gilmore - Mac Giolla Mhir (Thuaidh)
(Mac) Gilmore (Gilmer) - Mac Giolla Mhir (Sligeach)
(Mac) Gilmore - Mac Giolla Mhuir
Mac Gilna(gh) - Mac Giolla na Naomh
Gilpatrick - Mac Giolla Phádraig
Gilpin - Mac Giolla Finn
Gilrain - Mac Giollaráin
Mac Gilrea - Mac Giolla Rua
Mac Gilreevy - Mac Giolla Riabhaigh
(Mac) Gilroy - Mac Giolla Rua
(Mac) Gils(h)enan (Gilson) - Mac Giolla Seanáin
(Mac) Giltenan - Mac Giolla tSeanáin
Gilton - Mac Giolla tSeanáin
Mac Gilvane - Mac Giolla Bháin
(Mac) Gilvany - Mac Giolla Mheana
(Mac) Gilvarry - Mac Giolla Bhearaigh
Mac Gilvie (Gilwee) - Mac Giolla Bhuí
O’Gilvie - Ó Giolla Bhuí
Gilvoy - Mac Giolla Bhuí
(Mac) Gilvoy (Gilway) - Mac Giolla Bhuí
Mac Gimpsey - Mac Dhíomasaigh
Gina (ginnaw) - Mac Cionaoith
Ginaty - Mac Fhinneachtaigh
Mac Gindle - Mag Fhionnail
Ginevan (Ginivan) - Mac Dhuinneabháin
Mac Ginley - Mag Fhionnaile
(Mac) Ginn (Ging) - Mag Fhinn
(O) Ginnane - Ó Coinneáin
(Mac) Ginnell - Mag Fhionnail
(Mac) Ginnelly - Mag Fhionnaile
Mac Ginness - Mag Aonais
(Mac) Gin(i)ty - Mag Fhinneachta
Mac Ginyer - Mag Fhionnbhairr
Ginnevan - Ó Ceannuáin
Girey - Ó Gadhra
Mac Girl - Mag Fhearail
Mac Girr - Mac an Ghirr (Ulaidh)
Mac Girr - Mac an Ghearr (Connachta)
(O) Girvan - Ó Gairbhín
(O) Gissane - Ó Cíosáin
(Mac) Given - Mac Dhuibhín
Mac Givena - Mac Dhuibhín
Mac Givern - Mag Uidhrín
Mac Givney - Mac Dhuibhne
Glackan - Ó Glacáin
(Mac) Gladdery - Mac Gleadra
Mac Glade - Mag Léid
(Mac) Glaffey - Mag Laithimh
Mac Glan - Mag Fhlainn
Mac Glanchy - Mac Lannchaidh
Mac Glancy - Mag Lannchaidh
Glanders - Mag Giolla Aindréis
Glanfield - de Glainbhíol
Glanny - an Ghleanna
Glanton - an Ghleanntáin
Glanville - de Glainbhíol
Glanvill(e) (Glanfield) - de Glainbhíol
Mac Glare - Mac Giolla Chathair
Glasby - Mac Giolla Easpaig
(Mac) Glasgow - Mac Bhloscaigh
Mac Glashan - Mac Glaisín
(O) Glasheen- Ó Glaisín
Glass - Glas
Glassett - Glaiséid
Mac Glaughlin - Mag Lochlainn
Mac Glave - Mac Laithimh
Glavey - Mac Laithimh
(Mac) Glavin - Mag Láimhín
(O) Glavin - Ó Gláimhín
(Mac) Glavy - Mag Laithimh
Gleasure - Gléasúr
Mac Gleen - Mag Fhloinn
(Mac) Glennan - Mac Giolla Fhinnéin
(O)Gleeson - Ó Gliasáin
Mac Gleish - Mac Giolla Íosa
Glenane - Mag Leannáin
Glendon - Mac Giolla Fhiondáin
Glen(n)eghan - Mag Leannacháin
Glenn(y) - an Ghleanna
(Mac) Glennon - Mag Leannáin
Mac Glew - Mac Dhoinnléibhe
Mac Glew (Leod) - Mac Leoid
Gilihool - Mac Giolla Chomhaill
Mac Glin (Glynn) - Mac Fhloinn
Mac Glinchy - Mag Loingsigh
Glissane - Ó Glasáin
Mac Gloin - Mac Giolla Eoin
(Mac) Glone (Gloon) - Mac Giolla Eoin
Glorney (Glory) - Ó Glóiairn
(Mac) Glory - Mag Labhraí
(Mac) Gloughlin - Mag Lochlainn
(Mac) Glynn - Mag Fhloinn
Goaley - Ó Gabhla
Goan - Ó Gobhann
Gobin - Ó Gobáin
Godfrey - Mac Gothraidh
Godman - Gothmann
Godrick - Mag Ualghairg
Godwin - Ó Deá
Mac Goey - Mag Eochaidh
Mac Goff - Mag Eochaidh
Goff (Gough) - Mag Eochaidh
Mac Gofrey - Mac Gafraidh
Gogan - (Goggin) - Gógan
(Mac) Gogarty - Mag Fhógartaigh
Mac Goggy - Mag Eochaidh
(O) Gohery - Ó Gothraidh
Going - Mac Gabhann
Golaghley - Mac an Ghallóghlaigh
Golden - Ó Góilín
Goldie - Gúilí
(Mac) Goldrick - Mac Gualraic
(O) Goligher - Ó Gallchóir
Golightly - Mac an Ghallóglaigh
Gollan - Ó Galáin
Gomory - Mac Iomaire
Mac Gonigal - Mac Congail
Gonn - Gunna
Gonne - Gunna
Mac Gonnell - Mac Dhónaill
Gonoude - Mag Nuad
Good - Gud
Goodfellow - Mag Uiginn (Tír Eoghain)
Goodman (Godson) - Mac Giolla Mhaith
Goodman - Mag Uiginn (Tír Eoghain)
Goodwin - Mac Gualraic
(Mac) Googan - Mac Guagáin
Mac Goohan - Mag Cuacháin
Mac Gool - Mag Fhearghail
Goold(e) - Gúl
Gooley - Ó Gabhla
(O) Goonan(e) - Ó Gamhnáin
Goonery - Ó Gamhnaire
Gooney - Ó Gamhnáin
Mac Goorty - Mac Dhorchaidh
Gordon - Mac Mhuirneacháin
Gore - de Gaor
Gorevan - Mag Shamhráin Ó Garbháin (Sligeach)
Gorey - Ó Guaire
Gorham - Ó Guairim
Gorish - Mag Fheorais
Mac Gorl - Mag Fhearail
Mac Gorley - Mag Thoirealaigh
Mac Gorlick - Mac Gualraic
Gormagan - Ó Gormagáin
Gormally - Garmaile
(Mac) Gorman - Mac Gormáin
O’Gorman - Ó Gormáin
(O) Gormican - Ó Gormagáin
Gormley - Ó Garmaile
Mac Gorrian - Mag Corraín
Mac Gorry - Mac Gothraidh
Gorry - Ó Guaire
Mac Gorty - Mac Dhorchaidh
Goslin(g) - Góislín
Gosnell - Góiséir
Gossan - Ó Gusáin
(Mac) Gough - Mag Eochaidh
Gould - Gúl
Goulding - Góilin
Goulding - Ó Gabhláin
Mac Gouldrick - Mac Gualraic
Gouldy - Gúilí
Mac Gourkey - Mac Dhorchaidh
(Mac) Gourley - Mag Thoirealaigh
Mac Gourneson - Mag Mhuirneacháin
(Mac) Goveran (Magauran) - Mag Shamhráin
Governey - Mac Giobheanaigh
Gow - Mac Gabha
(Mac) Gowan - Mac Gabhann
(O) Gowan - Ó Gabhann
Gowen (Going) - Mac Gobhann
Gowran - Ó Gabhráin
Mac Gowran - Mag Shamhráin
Mac Gra - Mag Raith
Grace - Grás
(O) Graddy - Ó Greada
Mac Grade (Gread) - Mag Raith
Graden - Mag Bhradáin
Mac Grady - Mag Bhrádaigh
(O) Grady - Ó Gráda
Graham - Ó Gréacháin
Graham (Grahan) - Ó Gréacháin
Grailis - Mag Riallais
Grainger - Gráinséir
Mac Granahan - Mag Reannacháin
Grandon - Grandún
Mac Grane - Mag Ráine
Mac Graney - Mag Ráine
Grange - Gráinseach
Mac Grann - Mag Bhrain
Mac Grann- Mag Ráine Ó Gréacháin
(Mac) Grannell - Mag Ránaill
Mac Grannon - Mag Raghnainn
(Mac) Granny - Mag Ráine
Grant - Grant
Mac Grath - Mac Craith
(Mac) Grattan - Mag Reachtain
Graves - Ó Griabháin
Mac Graw - Mag Raith
Gray - Mac Cathail Riabhnaigh
Grayhan (Grayson) - Ó Gréacháin
Greacen - Ó Gréacháin
Mac Gready - Mag Riada
O Gready - Ó Greada
Mac Greal - Mag Réill
(Mac) Grealish - Mag Riallais
(Mac) Greally - Mag Raollaigh
Mac Grean - Mag Ráine
(O) Greaney - Ó Gráinne
Greaven - Ó Griabháin
Greaves - de Gréibh
(O) Greefa - Ó Gríofa
(O) Greehy - Ó Gríocha
Green - Ó hUaine
(O) Greenan - Ó Grianáin
Mac Greer - Mac Grioghair
Mac Greevy - Mag Riabhaigh
Mac Gregan - Mag Riagáin
Gregan - Ó Gréacháin
Mac Gregor - Mac Griogair
Gregory - Mac Gréagair
(O) Grehan - Ó Gréacháin
Mac Grellish - Mag Riallais
(Mac) Grenaghan - Mag Reannacháin
Mac Grennahan - Mag Reannacháin
(O) Grennan - Ó Grianáin
Mac Grenor - Mag Thréinir
Grew - Ó Maolchraoibhe
Grew - Mac Riabhaigh (Muineachán)
Grey - de Grae
Mac Griana - Mac Grianna
(O) Gribben - Ó Gribín
Mac Gribbin - Mag Roibín
Grierson - Mac Grioghair
Mac Grievy - Mag Riabhaigh
Mac Griffin - Mac Grífín
Griffith - Ó Gríofa
(O) Griffy (Griffin) - Ó Gríofa
Mac Grillan - Mag Rialláin
Mac Grillish - Mag Riallais
Grimes - Ó Gréacháin
Grimley - Ó Garmaile
Mac Griskin - Mac Cristín
Mac Groany - Mag Carramhna
Groarke - Mag Ruairc
Mac Groarty - Mag Ruartaigh
Groden - Mag Rodáin
(Mac) Grogan - Mac Gruagáin
(O) Grogan - Ó Gruagáin
Mac Gronan - Mag Ránainn
Gronel - Mag Ránaill
Mac Grory - Mag Ruairí
Mac Grotty - Mag Ratha
Grourke - Mag Ruairc
Growder - Mag Bhruadair
(O) Growney - Ó Gramhna
(Mac) Gruagan - Mac Gruagáin
Grubb - Mag Rob
Mac Grudder - Mag Bhruadair
(O) Grugan - Ó Gruagáin
Grumley - Ó Garmaile
Grummell - Gromail
Grunnell - Gromail
Mac Gruane - Mac Dhuáin
Guare - de Gaor
Gubbins - Ó Goibín
(Mac) Guckian - Mag Eochaín
Mac Guehan - Mac Gaoithín
Mac Gueran - Mac Géaráin
(O) Guerin - Ó Géaráin
Mac Guff - Mac Dhuibh
Mac Guffin - Mac Dhuifinn
Guidera - Mac Giodaire
Mac Guigan - Mag Uiginn
Mac Guighan - Mag Eocháin
(O) Guihan - Ó Gaoithín
Mac Guilan - Mac Coilín
Guilchrist - Mac Giolla Chríost
(Mac) Guilfoyle - Mac Giolla Phóil
Mac Guill - Mag Coill
Mac Guillian - Mag Coilín
Guilliland - Mac Giolla Fhaoláin
Guilmartin - Mac Giolla Mhártain
(O) Guinan(e) - Ó Coinneáin
Mac Guinea - Mag Cionaoith
Guinevan - Mac Dhoinneabháin
(O) Guinevan - Ó Ceannuáin
Mac Guiney - Mac Géibheannaigh
(O) Guiney (Guinee) - Ó Guiní
Mac Guinn - Mag Coinn
Guinnane - Ó Coinneáin
Guinnaty - Mag Fhionnachta
Mac Guinn - Mag Coinn
Guinnane - Ó Coinneáin
Guinnaty - Mag Fhionnachta
Mac Guinness - Mag Aonasa
Mac Guire - Mag Uidhir
Mac Guirk - Mag Coirc
Mac Guirk (Gurk) - Mac Oirc
Guiry - Ó Gadhra
(O) Guissane - Ó Cíosáin
Gul(l)an - Ó Golláin
Gullion - Gilleán
Mac Gullion - Mac Gilleáin
Gully - Ó Gabhla
Gumbleton - Gumartún
Gunn - Mac Giolla Dhoinn
Gunn - Mac Giolla Ghunna
Gunnell - Mag Conail
Gunner - Gunnar
Mac Gunnigan - Mac Dhonnagáin
Gunnigle - Mag Congail
(O) Gunning - Ó Conaing
Gunshenan - Mac Giolla Seanáin
Gurdan - Mac Siúrtáin
Mac Gurgan- Mac Dhuarcáin
Mac Gurk - Mag Oirc
Mac Gurkin - Mac Dhuarcáin
Mac Gurl - Mag Fhearail
Mac Gurn - Mag Corráin
Mac Gurnaghan - Mag Mhuirneacháin
Mac Gurrin - Mag Corraín
Mac Gurrell - Mag Fhearail
Gurry - Mac Gothraidh
Mac Gushion - Mag Oisín
Mca Guskin - Mag Uiscín
Mac Gusty - Mag Oiste
Gutherie - Ó Laithimh
Guy - Guidh
Gware - de Gaor
Gweehin - Ó Gaoithín
Gwyn(n) - Guin
Gyles - Ó Glaisne