Irish buachaill

← Breton bugel (cognate)

← Proto-Celtic *boukolyos (inherited)

← Welsh bugail (cognate)

← Ancient Greek βουκόλος (cognate)

← Proto-Indo-European *kʷel- (root)

← Proto-Indo-European *gʷowkólos (derived)

← Proto-Indo-European *gʷṓws (mention)

← Proto-Indo-European *kʷel- (mention)

← Old Irish búachaill (inherited)

→ Breton bugel (cognate)

→ Welsh bugail (cognate)