Other variants of the name Owain include Ewein, Iguein, Owein, Ouein, Ywen, Ywein, Ywain, Yuein, and Yvain.
Osborn Bergin proposed that the name is cognate with Old Irish Ugaine, Augaine, and suggested that the Irish name could be a British loan.
[1] Linguist Kenneth H. Jackson proposed that the name is a derivation of the Latin Eugenius,[2] (which was more recently accepted by T.J.
[4][5] Linguists Holger Pedersen and Henry Lewis (who earlier linked the name to Gaulish *Esugenos)[6] determined that both Jackson's and Pokorny's etymologies were phonologically impossible.
[8] Owain is one of the few Welsh names to be consistently popular over the last 100 years in England and Wales, particularly with the spelling Owen (and pronunciation /ˈoʊwən/).