The brennan Surname
brennan Name Meaning and History
- (predominantly southern) Anglicized form of Gaelic Ó Braonáin ‘descendant of Braonán’, a personal name from a diminutive of braon ‘moisture’, ‘drop’. Compare Breen.
- (predominantly northern) Anglicized form of Gaelic Ó Branáin ‘descendant of Branán’, a personal name meaning ‘little raven’ (see Brannigan).
Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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