Family name origins & meanings
- Scottish : Anglicized form of Gaelic Mac Gille Eathain, a patronymic from a personal name meaning ‘servant of (Saint) John’. The family bearing this name were chieftains in several islands of the Inner Hebrides.
- Irish : Anglicized form of Gaelic Mac Giolla Eóin, cognate with 1, from a different Gaelic form of Johannes (John). Compare McGlone.