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
Mac Maoláin presence of a collateral family in the province of Leinster. MacMullan and McMullen families are recorded in the Barony of Uíbh Echach (Clanna-Rory Irish Genealogical Foundation page 16), as Bishops of the Diocese of Connor and Down with the Bishops seat (the seat of MacMullen) identified as the townland of Cabra, parish of Clonduff, ancient territory of Mac Aenghusa (Magennis), Lords of Iveagh. Mac Maoláin Mac Maoláin Gaelic-Irish surname. Mac Maoláin was a surname borne by a number of unrelated families in Gaelic Ireland, anciently found in Breifne, Mide, Brega, Connacht and Ulster. Now anglicized MacMullan, MacMullen, MacMoylan, McMullen, McMullan,