Welsh Sais

← Proto-Brythonic *Seis (inherited)

← Proto-Brythonic *Saïson (mention)

← Proto-West Germanic *sahs (derived)

← Cornish Sows (cognate)

← Latin Saxō (derived)

← Latin Saxōnēs (mention)

→ English Sais (borrowed)

→ Cornish Sows (cognate)