Etymology

Rooney

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

Irish Ó Ruanaidh
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The story

  1. Irish · derived fromÓ Ruanaidh“descendant of a person named Champion”
  2. English todayRooney

Anglicised from Irish Ó Ruanaidh (“descendant of a person named Champion”).

Etymology from Wiktionary, CC BY-SA 4.0.