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,
O'Hare (surname) an English surname, or at least an English version of their Irish surname, therefore many removed the 'Mac' or 'O' from their surname. However The O'Hehir and O'Hare families did not drop the 'O', nor did they adopt an English version of their surnames. As a result, they would have had to endure extreme hardship and suffering because of such opposition. (The creation of societies such as the Gaelic League in the late 19th Century resulted in the widespread resumption of the 'Mac' and 'O' prefixes to many Irish surnames.) People with the surname O'Hare: O'Hare (surname) "'O'Hare" is the