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
Gillespie (surname) is most common in Ulster. During the nineteenth century in Ireland, the surname was most numerous in the counties of Antrim, Donegal, Armagh, and Tyrone. Scottish Gaelic forms of the surname include "GillEasbuig", and "GillEasbaig". Gillespie (surname) Gillespie () is both a masculine given name, and a surname in the English language. The given name is an Anglicised form of the Gaelic "Gille Easbaig" (also rendered "Gilleasbaig"), meaning "bishop's servant". The surname "Gillespie" is an Anglicised form of the Scottish Gaelic "Mac Gille Easbuig", and the Irish "Mac Giolla Easpaig", both of which mean "servant of the bishop". The given