Regan is an Anglicized form of the Irish surname Ó Riagáin ("son of Riagán") derived from the Irish personal name Riagán, which means "little king".
Read more about Regan: List of Persons With The Surname
Regan is an Anglicized form of the Irish surname Ó Riagáin ("son of Riagán") derived from the Irish personal name Riagán, which means "little king".
Read more about Regan: List of Persons With The Surname