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Welsh: from the personal name Owain from Latin Eugenius (see Eugene ). This Welsh personal name is cognate with Old Irish Eogán see 2 and Scottish and Irish: shortened Anglicized form of Gaelic Mac Eoghain ‘son of Eoghan’. See McEwen . Irish: from Ó hEoghain ‘descendant of Eoghan’. See Ewen .
Source: Dictionary of American Family Names 2nd edition, 2022
Project includes variants