Etymology

McBrien

M3C3B3R1I1E1N1

Today it means: A surname from Irish. Full definition →

Irish Mac Briain
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The story

  1. Irish · derived fromMac Briain“son of Brian”
  2. English todayMcBrien

Anglicized form of Irish Mac Briain (“son of Brian”) or of Mac Brain (“son of Bran”), a personal name based on bran (“raven”).

Etymology from Wiktionary, CC BY-SA 4.0.