Padraig Mac Giolla-Domhnaigh

Crawford—Crawford in central Ulster and the north-west is the anglicised form of the Ulster sept name, Cravigan (Mac Crábhagain), though some families of the name in N.E. Ulster are of Scottish origin.

Alphabetical Index of Anglicised Surnames in Ireland

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