Mac Giolla Finn
Mac GIOLLA FINN—IV—M'Gilleffin, MacGilpin, Gilpin; 'son of Giolla Fionn' (the fair youth); the name of a family of the Ui Fiachrach who were formerly seated in the townland of Laragh, in the parish of Dromard, Co. Sligo.
Alphabetical Index to Irish Surnames