Considine is an Irish surname anglicised from the Gaelic form Mac Consaidín meaning "son of Consaidín" being derived from a foreign Christian name; meaning "son of Constantine".
According to historian C. Thomas Cairney, the MacConsidines were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.
[1] The family were based in Kingdom of Thomond, much of which later became County Clare.
The ancestor of the family was Consaidín Ua Briain, a Bishop of Killaloe who died in 1194 and who was the son of Toirdhealbhach mac Diarmada Ua Briain.
Notable people with the surname include: Other people with this name are: