An Irish surname, the Anglicized form of Ó Fionnagáin, meaning 'descendant of Fionnagán'. Fionnagán is a diminutive of Fionn, an Irish name meaning 'white, blessed' (often rendered as 'fair'). Finnegan is used as a first name, transferred from the surname.
Nicknames
finn
Vibe
friendly
How it ages.
A sturdy Irish surname turned first name, with a warm, approachable feel; steady rather than trendy.