←
Proto-Celtic *oinos (derived)←
Proto-Celtic *gus- (cognate)←
Proto-Indo-European *ǵews- (root)←
Proto-Indo-European *óynos (derived)←
Middle Irish Aengus (inherited)←
Middle Irish Oengus (mention)←
Old Irish Oíngus (inherited)←
Old Irish oín (mention)←
Old Irish gus (cognate)