Llefelys

After Beli dies, Lludd rules Britain and his younger brother Llefelys becomes king in France. When the French king dies leaving a daughter but no other heir, Llefelys asks Lludd to help him seek her in marriage. Lludd brings ships and armed knights, and the French nobles agree to the match. Llefelys receives the crown with his bride and rules France wisely.

Three plagues then afflict Britain: the Coranians can hear speech carried on the wind, a frightening cry returns each May Eve, and food vanishes from royal courts at night. Lludd sails to France for counsel. The brothers meet at sea and use a long brass horn so the wind cannot carry their words. A demon first makes their speech sound hostile, but Llefelys washes the horn with wine and they can speak freely. He gives Lludd insects to destroy the Coranians, with some kept for future use. For the dragons that cause the cry, he prescribes a central pit and covered cauldron. For the magician stealing food, he advises Lludd to keep cold water nearby so he can stay awake. Lludd returns to Britain and carries out each remedy: the insects defeat the Coranians, the dragons are buried apart, and the cold-water watch lets him catch the magician. With the plagues ended, Lludd rules peacefully in Britain while Llefelys remains king in France.