Breton da

← Breton te (mention)

← Proto-Celtic *do (inherited)

← Proto-Celtic *tou- (inherited)

← Welsh dy (cognate)

← English to (link)

← English your (link)

← Irish do (cognate)

← Cornish dha (cognate)

→ English to (mention)

→ Welsh i (cognate)

→ Welsh dy (cognate)

→ Irish do (cognate)