McAllister (surname) has many different spellings due to immigration. Some of the common spellings are 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,
Fitzpatrick (surname) Fitzpatrick (surname) The surname Fitzpatrick is the known translation of at least two different surnames: Mac Giolla Phádraig and Ó Maol Phádraig from the original Irish to English. Currently, it is ranked as the 60th most common surname in Ireland with an estimated 12,700 individuals bearing the name. While both "Mac Giolla Phádraig" and "Ó Maol Phádraig" have similar meanings, they are likely unrelated; yet both have arrived in the modern era as "Fitzpatrick". Despite the prefix ""Fitz-"", Fitzpatrick is not a name of Hiberno-Norman descent. Giolla Phádraig (means "the devotee of Patrick"). Gilla Patráic mac Donnchada was a tenth