| Families |
Ethnic Group |
Branch of |
| Elder |
IVL - S.Scotland, Ireland |
|
| Enrick, Eanrig |
|
Gunn |
| Erskine |
Cruithne |
|
| Fagan |
|
O'Hagan |
| Fagan |
IVL - Ireland |
|
| Fagan |
Normans |
|
| Faltagh, Wall |
Norman |
|
| Fant |
|
Tribes of Galway |
| Farquharson |
Erainn |
|
| Fergus |
IVL - Ireland |
|
| Fergusson, Fergus |
Erainn |
|
| Fergusson, Fergus |
IVL - Northeast & South Scotland, Ireland |
|
| Fernon |
|
O'Heffernan |
| Ferries |
|
Fergusson (Ulster) |
| Ferris |
|
Fergusson (Buchan) |
| Ferris |
|
O'Moriarty |
| Ferris |
IVL - Scotland, Kerry |
|
| Finlay, Finlayson |
|
Farquharson |
| Fitzgerald |
Normans |
|
| Fitzgibbon |
Normans |
|
| Fitzmaurice |
|
Fitzgerald |
| Fitzmaurice |
|
Prendegast |
| Fitzpatrick |
Erainn |
|
| Fleming |
IVL |
|
| Fleming |
Normans |
|
| Fletcher |
|
MacGregor |
| Fletcher |
IVL - Ireland |
|
| Forbes |
Cruithne |
|
| Fotheringham |
|
Fothringham |
| Fothringham |
Normans |
|
| Fox |
Gaels |
|
| Fox |
IVL - Cork, Sligo, Limerick |
|
| Fraser |
IVL - Ireland |
|
| Fraser |
Normans |
|
| French |
Normans |
Tribes of Galway |
| Frissell, Frizell |
|
Fraser |
| Frissell, Frizell |
IVL - Munster |
|
| Gaffney (S W Ulster) |
|
MacCaron |
| Gaffney |
IVL |
|
| Galbraith |
Laigin |
|
| Gallie |
|
O'Galvin |
| Gallie |
IVL - South Scotland |
|
| Gallivan |
|
O'Galvin |
| Ganley, Gantley |
|
MacShanly |
| Garrahy |
|
MacGarry |
| Garrahy |
|
MacGeraghty |
| Gaunson |
|
Gunn |
| Gawley (Connacht) |
|
MacAwley (Fermanagh) |
| Geary |
|
O'Gara |
|
