Mac Giolla Chathair
Mac GIOLLA CHATHAIR—IV—M'Gillacahir, Macgillachair, M'Gillahare, MacIlhar, MacIlhair, MacElhair, (?) MacGlare, Kilcar, Kilcarr, Carr; 'son of Giolla Chathair' (servant of St. Cathair); a Donegal surname.
Alphabetical Index to Irish Surnames