The surname Deegan is of Irish origin, derived from the Gaelic name Ó Duibhginn, meaning "descendant of the black-headed one. " This name is a shortened Anglicized form of the Gaelic name, which originally referred to a byname from "dubh" (black) and "ceann" (head). The Deegan surname is primarily associated with the province of Leinster in Ireland, particularly in counties Laois and Offaly. Over time, the name has evolved with various spellings and has been carried by families through migration and the Irish diaspora. The name Deegan is important because it represents a rich cultural heritage and a connection to Ireland's history and traditions.
