Welsh blaidd

← Breton bleiz (cognate)

← Proto-Brythonic *blėð (inherited)

← Proto-Celtic *bledyos (inherited)

← Proto-Celtic *bledā (mention)

← Cornish bleydh (cognate)

← Old Irish bled (mention)

← Middle Welsh bleidd (inherited)

→ Breton bleiz (cognate)

→ Cornish bleydh (cognate)