Padraig Mac Giolla-Domhnaigh

Harrington—This name is the anglicised form of Harroughton (O' h-Arrachtain) in Co. Kerry and North-Western Connacht; of O' h-Aireachtaigh in Donegal, North Connacht, Longford, and North Munster; and of O' h-Urdail in Co. Cork.

Alphabetical Index of Anglicised Surnames in Ireland

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