Baring-Gould’s sources: Wytford in his Anglican Martyrology; and the Bollandists, Anciently venerated in Cardiganshire, where, at Llangrannog, a fair is annually held on May 27th, which according to the Old Style is the feast of the saint. Authorities John of Tynemouth, and a. life in the British Museum, Cottonian MSS., Vesp. A. xiv.J Carantog, in Latin Carantocus, son of Corun ab Ceredig, prince of Cardigan and brother of S. Tyssul, was the founder of the church of Llangrannog in Cardiganshire. He is said early to have embraced the religious life, and to have passed into Ireland, where he preached the Gospel with great success, being constantly attended by a white dove, which the people supposed to be a guardian angel. He returned to Wales and retired into a cave, accompanied by many disciples. Now the dove fluttered before him and darted away, and came back, as though desiring him to follow. So he said, UI will go and see whither the white bird leads.” And it led him through the forest to a smooth grassy spot, and rested there. Then he said, “ Here will I build a church.” And this is the origin of the church of Llangrannog.

Next follows a wondrous story of how a great serpent scared and devastated the Carr, a marshy district in Wales. Now it fell out that Christ cast an altar of a marvellous colour out of heaven, and Carantog took it; and as he was conveying it in a boat over the Severn, it fell overboard into the sea; and the hermit said, “ God will wash it with His waves to the place where it shall be set up.” And he went to King Arthur, and asked him if he knew whether his altar had come ashore anywhere. Then Arthur said, " Bind me the serpent in the Carr and I will tell thee.”

Then the hermit went to the morass and called the venomous beast, and it came, and he cast his stole about it, and brought it into the hall where the king and his knights sat, and there Carantog fed it. And after that he let the serpent go, having first commanded it to do no injury to man or beast. So Arthur gave him up the altar, which had been washed ashore, and which he had purposed to make into a table for himself and his knights. And Carantog set it up and built a church, and it is at the place called Carrow (Cardigan). Afterwards he went back to Ireland, and there he died.