Gilfillan Family History
Gilfillan Surname Meaning
Scottish (Glasgow): from a shortened Anglicized form of the Gaelic personal name Gille Fhaolain ‘servant of (Saint) Fillan’ possibly a patronymic without mac ‘son’.
Irish (Donegal and Derry) and Scottish: variant of McClelland.
Source: Dictionary of American Family Names 2nd edition, 2022
