Gender: Masculine
Usage: Irish, English (Modern)
Meaning
From an Irish surname, an Anglicized form of Ó Fionnagáin meaning “descendant of Fionnagán”. The name Fionnagán is a diminutive of Fionn. This was the name of a character in James Joyce’s novel Finnegans Wake (1939), the title of which was based on a 19th-century Irish ballad called Finnegan’s Wake.