The surname Macallister originates from Scotland and Ireland, derived from the Gaelic name Mac Alasdair, meaning "son of Alasdair, " which is the Gaelic form of Alexander. The name was introduced to Scotland by Queen Margaret in the late 11th century. Over time, the use of Macallister has fluctuated in popularity, with significant presence in Scotland and Ireland, particularly in counties like Armagh, and Down. The name is important due to its rich historical and cultural heritage, tied to the Scottish Clan Donald and the Dalriadan tribe. It symbolizes strength and defense, reflecting the original meaning of Alexander.
