Welsh ei

← Proto-Celtic *esyo (inherited)

← Proto-Celtic *esyās (mention)

← Welsh ’i (link)

← Welsh ’w (link)

← Welsh i (mention)

← Welsh e (mention)

← Welsh o (mention)

← Welsh fe (mention)

← Welsh fo (mention)

← Welsh hi (mention)

← Sanskrit अस्य (cognate)

← Sanskrit अस्यास् (mention)

← Old Irish a (cognate)

→ Breton he (cognate)

→ Welsh e (link)

→ Welsh erioed (compound)

→ Welsh Jac a'i Wagen (compound)

→ Irish a (cognate)

→ Old Irish a (cognate)

→ Old Irish a/Old Irish (cognate)