For background on how the map was made (and its flaws), see the relevant blog entry.
|Gallagher||Very numerous: all provinces but primarily Donegal and adjoining counties. MacLysaght mentions 23 different spellings of the anglicised name! The Irish is Ó Gallchobhair, meaning "lover of foreigners". They were a leading sept of Cineál Conaill and ally of the O'Donnells. The sermons of Bishop James O'Gallagher (1681-1751) are one of the treasures of Irish spirituality. The name has been abbreviated to Gallahue. IF & SGG.|
|Goligher||Quite numerous: Ulster generally. Ir. Ó Gallchóir. See Gallagher.|
|Ó Gallchobhair||fairly rare: Donegal etc. Ir.Lang. See Gallagher.|
|Ó Gallchobhair||Gallagher & rl. An-líonmhar ar fud na tíre ach sí Tír Chonaill a ndúiche shinseartha. Clann mhór de chuid Chineál Conaill, nasctha leis na Domhnallaigh agus páirteach in imeachtaí an 16 céid in gCúige Uladh. Litriú nua: Ó Gallchóir.|
|O'Gallagher||Very rare: Ulster. Ir. Ó Gallchobhair, Ó Gallchóir. See Gallagher.|
DEDs where Gallager and a second surname are found together