The Irish surname Corrigan is an anglicized form of the Gaelic name Ó Corragáin meaning “descendant of Corragán,” a double diminutive of corr meaning “pointed.” The Corrigans originated in the Ulster county of Fermanagh and were of the same stock as the Maguires. The chieftains of these two septs joined forces with the powerful O' Neills of Tyrone and resisted Norman attempts to conquer Fermanagh in the 12th and 13th Centuries. In the 1659 "Census" of Ireland, Corrigan and O'Corrigan were among the most numerous names in that part of Ulster, however, its prevalence in 16th and 17th Century records of Counties Monaghan, Longford, Offaly, Meath and Roscommon show that the sept had scattered widely. The place called Ballycorrigan near Nenagh (Co. Tipperary) indicates that a leading family of Corrigan were seated there. Today there are more than 11,000 bearers of the last name Corrigan living in The United States. See the crest on a ring below for the variant spelling Carrigan.