Etymology

Colgan

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

Irish Ó Colgáin
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The story

  1. Irish · derived fromÓ Colgáin“descendant of Colgán”
  2. English todayColgan

Reduced Anglicized form of Irish Ó Colgáin (“descendant of Colgán”), a personal name derived from a diminutive form of colg (“thorn; sword”).

Etymology from Wiktionary, CC BY-SA 4.0.