Welsh llawen

← Breton laouen (cognate)

← Proto-Brythonic *llowen (inherited)

← Proto-Celtic *lowenos (inherited)

← Cornish lowen (cognate)

← Middle Welsh llawen (inherited)

→ Breton laouen (cognate)

→ Welsh llawenydd (affix)

→ Cornish lowen (cognate)