Mac Alastair
Mac ALASTAIR—V—M'Alaster, MacAlister, MacAllister, MacCallister, MacEllister, MacAlester, M'Closter, MacClester, MacLester, Callister, Lester, etc.; 'son of Alastar,' (a Gaelic form of Alexander); the name of a branch of the MacDonalds, long settled in Co. Antrim.
Alphabetical Index to Irish Surnames