Etymology

O'Reagan

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

Irish Ó Riagáin
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The story

  1. Irish · borrowed fromÓ Riagáin“of Riagán”
  2. English todayO'Reagan

From Irish Ó Riagáin (“of Riagán”).

Etymology from Wiktionary, CC BY-SA 4.0.