Save Type Surname (from occupation) Usage Scottish, Irish Expand Name LinksMeaning & History Anglicized form of Gaelic Mac Giolla Eoin meaning "son of the servant of EOIN". See All RelationsRelated Names VariantsMac Gilleain, MacLean, McLean(Scottish) Mac Giolla Eoin, MacLean, McLean, Monday(Irish) Entry updated November 16, 2019