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
Forrestal (surname) Forrestal (surname) Forrestal or Forristal (Irish: Ó Fuireastal), is an old Irish surname common in the southeast of Ireland, namely in the counties of Kilkenny, Wexford and Waterford. The name has been spelled in many different forms, all of which are related to the same family including; O'Forristal, Forrestal, Forristal, Forestal, Forestal, Forrestall, Foristal, and in medieval times, Forstall. Forestell is a variation found in Canada. Also, in Gaelic Irish as Ó Fuireastal (pronounced O'Furristhawl), Mac Fuireastal, and Mac An Choill. The Forristals were rooted in Glenmore parish, County Kilkenny, where they held several castles, some of which were located