Padraig Mac Giolla-Domhnaigh

Marley—This name is the anglicised form of an old Irish sept in the County of Mayo, and in Co. Limerick; in Gaelic O'Mearlaigh. The name shouldn't be confused with a Northumbrian family of the name Marley that settled in Ireland in the Seventeenth Century.

Alphabetical Index of Anglicised Surnames in Ireland

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