Gilliland Family History
Gilliland Surname Meaning
Scottish and Irish (Ulster): shortened Anglicized form of Gaelic Mac Gille Fhaolain (Scottish) or Mac Giolla Fhaoláin (Irish) ‘son of the servant of St. Faolán (Fillan)’.
Compare McClellan.
Source: Dictionary of American Family Names 2nd edition, 2022
