 According to the "Life of Saint Gildas", written in the early 12th century by Caradoc of Llancarfan, Arthur is said to have killed Gildas' brother Hueil and to have rescued his wife Gwenhwyfar from Glastonbury.In the "Life of Saint Cadoc", written around 1100 or a little before by Lifris of Llancarfan, the saint gives protection to a man who killed three of Arthur's soldiers, and Arthur demands a herd of cattle as "wergeld" for his men.Cadoc delivers them as demanded, but when Arthur takes possession of the animals, they turn into bundles of ferns.