Regan Family History
Regan Surname Meaning
Irish: shortened form of O'Regan an Anglicized form of Gaelic Ó Ríagáin ‘descendant of Riagán’ a personal name which is perhaps akin to ríodhach ‘impulsive furious’.
It can also be from Mag Riagáin ‘son of Riagán’. Compare Ryan.
Source: Dictionary of American Family Names 2nd edition, 2022
