Cornish bugh

← Breton buoc'h (cognate)

← Proto-Brythonic *bʉx (inherited)

← Proto-Celtic *boukkā (inherited)

← Proto-Celtic *bāus (mention)

← Middle Cornish bugh (inherited)

← Welsh buwch (cognate)

← Proto-Indo-European *gʷṓws (derived)

← Old Cornish buch (inherited)

→ Breton buoc'h (cognate)

→ Welsh buwch (cognate)