Padraig Mac Giolla-Domhnaigh

Small—In the districts about Limavady and Derry City the names Gilkie and Kilkey, respectively, are anglicised Small. (In Gaelic Mac Giollachaoich). In the district of Downpatrick and other parts of Co. Down, in Cookstown district, Co. Tyrone, and about Crumlin, Co. Antrim, the two names of Keiltogh and Kielty, respectively, are likewise changed to Small; in Gaelic O'Caoiltigh.

Alphabetical Index of Anglicised Surnames in Ireland

See also Woulfe’s Irish Names and Surnames
and O'Hart's Irish Pedigrees