Middle Irish Aengus

← Proto-Celtic *oinos (inherited)

← Proto-Celtic *gustu- (inherited)

← Proto-Celtic *gus- (inherited)

← Proto-Indo-European *ǵews- (root)

← Proto-Indo-European *óynos (inherited)

← Old Irish Oíngus (inherited)

← Old Irish oín (mention)

← Old Irish gus (mention)

→ Irish Aonghas (inherited)

→ Scottish Gaelic Aonghas (inherited)

→ Manx Anghus (inherited)

→ Norwegian Bokmål aberdeen angus (derived)