Saint Elvan of Avalon, or Glastonbury, was brought up in that school erroneously said to have been founded by S. Joseph of Arimathea. He vehemently preached the truth before Lucius, a British king, and was mightily assisted by S. Mydwyn of Wales (Meduinus), a man of great learning. Lucius despatched Elvan and Mydwyn to Rome, on an embassy to Pope Eleutherius, in 179, who consecrated Elvan bishop, and appointed Mydwyn teacher. He gave them, as companions, two Roman clerks, Faganus and Deruvianus; or, according to some, Fugatius and Damianus. They returned with these to King Lucius, who was obedient to the word of God, and received baptism along with many of his princes and nobles. Elvan became the second archbishop of London. He and Mydwyn were buried at Avalon. S. Patrick is said to have found there an ancient account of the acts of the Apostles, and of Fugatius and Damianus, written by the hand of S. Mydwyn. Matthew of Westminster gives the following account of the conversion of Lucius, under the year 185:--"About the same time, Lucius, king of the Britons, directed letters to Eleutherius, entreating him that he would make him a Christian. And the blessed pontiff, having ascertained the devotion of the king, sent to him some religious teachers; namely, Faganus and Deruvianus, to convert the king to Christ, and wash him in the holy font. And when that had been done, then the different nations ran to baptism, following the example of the king, so that in a short time there were no infidels found in the island." There is a considerable amount of exaggeration in this account of Matthew of Westminster, which must not be passed over. Lucius is known in the Welsh triads by the name of Lleurwg, or Lleufer Mawr, which means "The great Luminary," and this has been Latinized into Lucius, from _Lux_, light. He was king of a portion of South Wales only. The Welsh authorities make no mention of the alleged mission to Rome, though, that such a mission should have been sent, is extremely probable. Some accounts say that Medwy and Elfan were Britons, and that Dyfan and Ffagan (Deruvianus and Faganus) were Roman priests. But both these names are British, consequently we may conjecture that they were of British origin, but resided then at Rome.