Irwin - Anglicised Surnames in Ireland
|Author||Padraig Mac Giolla-Domhnaigh|
|Source||Some Anglicised Surnames in Ireland|
Irwin—This name in Ulster is an anglicised form of O' h-Eireamháin. It is confused with Irvine and Irving. The pronunciation of the name in most parts of Ulster is Horan and Oran, and probably the name is a branch of the O'Horan sept that migrated to the county Kerry about six hundred years ago from the borders of the present counties of Derry and Antrim.