Padraig Mac Giolla-Domhnaigh

Hewson—This name in the first instance, in Ulster and the West of Scotland, is the anglicised form of a branch of the Mac Kay sept, in Gaelic Mac Aoidh. Secondly it is the anglicised form of the Connacht sept of McHugh (Mac Aodha), principally in the districts surrounding Tuam, in County Galway, and of Ennis, Co. Clare.

Alphabetical Index of Anglicised Surnames in Ireland

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