Padraig Mac Giolla-Domhnaigh

Holmes—This name in Ulster is the anglicised form of Mac Thómais. Father Woulfe gives the Gaelic form Mac Shónais, only quoting one form. The first form given is the recognised Scottish Gaelic form by Adams. McTavish and M'Cavis (Mac Thómhais) in the districts about Ballymoney and other parts of Co. Antrim is synonymous with Holmes and Thomson, a sept of the clan Campbell in this case.

Alphabetical Index of Anglicised Surnames in Ireland

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