The story
- Irish · derived fromÓ Cuáin“descendants of Cuán”
- English todayCoyne
Anglicized form of Irish Ó Cuáin (“descendants of Cuán”), a byname from a diminutive of cú (“hound, dog”). It could also be an anglicized form of Ó Cadhain.
Etymology from Wiktionary, CC BY-SA 4.0.