Save Type Surname (from occupation) Usage Irish Pronounced Pron. /mˠək.ˈɟɪ.lˠə ˈoːnʲ/ [key·simplify] Meaning & HistoryExpand Links Irish Gaelic form of McLean. Related NamesDetails Rootsgilla + EoinVariantMondayOther Languages & CulturesMacLean, McClain, McLain, McLean(Scottish) MacGillEain(Scottish Gaelic)