The newborn child is discovered by Teyrnon, the lord of Gwent-Is-Coed (South-Eastern Wales). He is a horse lord whose fine mare foals every May Eve, but the foals go missing each year. He takes the mare into his house and sits vigil with her. After her foal is born he sees a monstrous claw trying to take the newborn foal through the window, so he slashes at the monster with his sword. Rushing outside he finds the monster gone, and a human baby left by the door. He and his wife claim the boy as their own naming him Gwri Wallt Euryn (Gwri of the Golden Hair), for "all the hair on his head was as yellow as gold". The child grows at a superhuman pace with a great affinity for horses. Teyrnon who once served Pwyll as a courtier, recognises the boy's resemblance to his father. As an honourable man, he returns the boy to the Dyfed royal house.