McAllister (surname) McAllister (surname) McAllister is a surname from Scotland and Ireland that originates from the Gaelic name Mac Alasdair, meaning son of God. Alasdair is the Gaelic form of the first name Alexander. The Mc Alisters for the greater part owe their ancestry to the Scottish clan of the Mac Donalds. The name is derived from the personal name Alexander. The Mc Alisters arrived in Ulster as Gallowglasses at the invitation of the MacDonnell's. Today the greatest numbers of the name are to be found in counties Antrim, Londonderry, Fermanagh, and Dublin, otherwise the name is widely dispersed. The McAllister surname
Allen (surname) most common surname in England. Allen (surname) Allen is a Celtic surname, originating in Scotland, and common in Ireland, Wales and England. It is a variation of the surname MacAllen and may be derived from two separate sources: Ailin, in Scottish and Irish Gaelic, means both "little rock" and "harmony", or it may also be derived from the Celtic Aluinn, which means "handsome". Variant spellings include Alan, Allan, etc. The noble family of this surname, from which a branch went to Portugal, is descended of one Alanus de Buckenhall. In Ireland, Allen is the Anglicization of the Gaelic name "Ó