Submitted NameRevisions Save Type Surname (from given name) Usage Scottish (Anglicized), Northern Irish (Anglicized), Scottish Gaelic Edit Status Status [show contributorshide contributors] Added 2/14/2014 by Fanny Edited 3/11/2017 by LMS Meaning & History Northern Irish (Ulster) and Scottish Anglicized form of Gaelic MAC GILLE ÍOSA, patronymic from a personal name meaning ‘servant of JESUS’.