Culhwch and Olwen
After this Arthur sent an embassy to Odgar, the son of Aedd king of Ireland, to ask for the Cauldron of Diwrnach Wyddel, his purveyor. And Odgar commanded him to give it.
But Diwrnach said, "Heaven is my witness, if it would avail him anything even to look at it, he should not do so."
And the embassy of Arthur returned from Ireland with this denial. And Arthur set forward with a small retinue, and
entered into Prydwen, his ship, and went over to Ireland. And they proceeded into the house of Diwrnach Wyddel. And the hosts of Odgar saw their strength. When they had eaten and drunk as much as they desired, Arthur demanded to have the cauldron.
And he answered, "If I would have given it to any one, I would have given it at the word of Odgar king of Ireland."
When he had given them this denial, Bedwyr arose and seized hold of the cauldron, and placed it upon the back of Hygwyd, Arthur's servant, who was brother, by the mother's side, to Arthur's servant, Cachamwri. His office was always to carry Arthur's cauldron, and to place fire under it. And Llenlleawg Wyddel seized Caledvwlch, and brandished it. And they slew Diwrnach Wyddel and his company. Then came the Irish and fought with them. And when he had put them to flight, Arthur with his men went forward to the ship, carrying away the cauldron full of Irish money. And he disembarked at the house of Llwydden the son of Kelcoed, at Porth Kerddin in Dyved. And there is the measure of the cauldron.
Then Arthur summoned unto him all the warriors that were in the three Islands of Britain, and in the three Islands adjacent, and all that were in France and in Armorica, in Normandy and in the Summer Country, and all that were chosen footmen and valiant horsemen. And with all these he went into Ireland. And in Ireland there was great fear and terror concerning him. And when Arthur had landed in the country, there came unto him the saints of Ireland and besought his protection. And he granted his protection unto them, and they gave him their blessing. Then the men of Ireland came unto Arthur, and brought him provisions. And Arthur went as far as Esgeir Oervel in Ireland, to the place where the Boar Trwyth was with his seven young pigs. And the dogs were let loose upon him from all sides. That day until evening the Irish fought with him, nevertheless he laid waste the fifth part of Ireland. And on the day following the household of Arthur fought with him, and they were worsted by him and got no advantage. And the third day Arthur himself encountered him, and he fought with him nine nights and nine days without so much as killing even one little pig. The warriors inquired of Arthur what was the origin of that swine; and he told them that he was once a king, and that God had transformed him into a swine for his sins.
Then Arthur sent Gwrhyr Gwalstawt Ieithoedd, to endeavour to speak with him. And Gwrhyr assumed the form of a bird, and alighted upon the top of the lair, where he was with the seven young pigs.
And Gwrhyr Gwalstawt Ieithoedd asked him, "By him who turned you into this form, if you can speak, let some one of you, I beseech you, come and talk with Arthur."
Grugyn Gwrych Ereint made answer to him. (Now his bristles were like silver wire, and whether he went through the wood or through the plain, he was to be traced by the glittering of his bristles.)
And this was the answer that Grugyn made, "By him who turned us into this form, we will not do so, and we will not speak with Arthur. That we have been transformed thus is enough for us to suffer, without your coming here to fight with us."
"I will tell you. Arthur comes but to fight for the comb, and the razor, and the scissors, which are between the two ears of Twrch Trwyth."