Cornish leugh

← Proto-Celtic *lāɸigos (inherited)

← Welsh llo (cognate)

← Proto-Indo-European *leh₂p- (inherited)

← Old Irish lóeg (cognate)

→ Breton leue (cognate)

→ Welsh llo (cognate)

→ Irish lao (cognate)

→ Manx lheiy (cognate)

→ Old Irish lóeg (cognate)