Etymology

McGinn

M3C3G2I1N1N1

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

Irish Mac Finn
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The story

  1. Irish · derived fromMac Finn“son of Fionn”
  2. English todayMcGinn

Anglicized form of Irish Mac Finn (“son of Fionn”), a byname from fionn (“white”).

Etymology from Wiktionary, CC BY-SA 4.0.