Meaning and Origin of: Brennan
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First name origins & meanings:
- Old English : Fiery hill
First name variations
Last name origin & meaning:
- Irish : (predominantly southern) Anglicized form of Gaelic Ó Braonáin ‘descendant of Braonán’, a personal name from a diminutive of braon ‘moisture’, ‘drop’. Compare Breen.
- Irish : (predominantly northern) Anglicized form of Gaelic Ó Branáin ‘descendant of Branán’, a personal name meaning ‘little raven’ (see Brannigan).