The regan Surname
regan Name Meaning and History
Irish: reduced form of O’Regan, an Anglicized form of Gaelic
Ó Ríagáin ‘descendant of Riagán’, a personal
name of uncertain origin, perhaps akin to ríodhgach
‘impulsive’, ‘furious’. See also Ryan.
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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