Welsh blodyn

← Breton bleuñv (cognate)

← Proto-Celtic *blātus (inherited)

← Welsh blawd (affix)

← Welsh -yn (affix)

← Irish bláth (cognate)

← Proto-Indo-European *bʰleh₃- (derived)

← Cornish bleujen (cognate)

← Middle Welsh blawt (inherited)

→ English blade (cognate)

→ Breton bleuñv (cognate)

→ Welsh blawd (link)

→ Cornish blejan (cognate)

→ Cornish bleujen (cognate)

→ Cornish bleujenn (cognate)