A little while before this, Creiddylad, the daughter of Lludd Llaw Ereint, and Gwythyr, the son of Greidawl, were betrothed. And, before she had become his bride, Gwyn ap Nudd came and carried her away by force; and Gwythyr, the son of Greidawl, gathered his host together, and went to fight with Gwyn ap Nudd. But Gwyn overcame him, and captured Greid, the son of Eri, and Glinneu, the son of Taran, and Gwrgwst Ledlwm, and Dynvarth, his son. And he captured Penn, the son of Nethawg, and Nwython, and Kyledyr Wyllt, his son.
When Arthur heard of this, he went to the North, and summoned Gwyn ap Nudd before him, and set free the nobles whom he had put in prison, and made peace between Gwyn ap Nudd, and Gwythyr, the son of Greidawl. And this was the peace that was made: that the maiden should remain in her father's house, without advantage to either of them; and that Gwyn ap Nudd, and Gwythyr, the son of Griedawl, should fight for her every first of May, from thenceforth until the day of doom; and that whichever of them should then be conqueror should have the maiden.
And, when Arthur had thus reconciled these chieftains, he obtained Mygdwn, Gweddw's horse, and the leash of Cwrs Cant Ewin.
And after that Arthur went into Armorica, and with him Mabon, the son of Mellt, and Gware Gwallt Euryn, to seek the two dogs of Glythmyr Ledewic. And when he had got them, he went to the west of Ireland in search of Gwrgi Severi; and Odgar, the son of Aedd, King of Ireland, went with him. And thence went Arthur into the North, and captured Kyledyr Wyllt; and he went after Yskithyrwyn Benbaedd. And Mabon, the son of Mellt, came with the two dogs of Glythmyr Ledewic in his hand, and Drudwyn, the cub of Greid, the son of Eri. And Arthur went himself to the chase, leading his own dog, Cavall. And Kaw of North Britain mounted Arthur's mare, Llamrei, and was first in the attack. Then Kaw of North Britain wielded a mighty axe, and absolutely daring he came valiantly up to the boar, and clave his head in twain. And Kaw took away the tusk. Now the boar was not slain by the dogs that Yspaddaden had mentioned, but by Cavall, Arthur's own dog.
And after Yskithyrwyn Benbaedd was killed, Arthur and his host departed to Gelli Wic in Cornwall. And thence he sent Menw, the son of Teirgwaedd, to see if the precious things were between the two ears of Twrch Trwyth, since it were useless to encounter him if they were not there. Albeit it was certain where he was, for he had laid waste the third part of Ireland. And Menw went to seek for him, and he met with him in Ireland, in Esgeir Oervel. And Menw took the form of a bird; and he descended upon the top of his lair, and strove to snatch away one of the precious things from him; but he carried away nothing but one of his bristles. And the boar rose up angrily, and shook himself so that some of his venom fell upon Menw, and he was never well from that day forward.
After this, Arthur sent an embassy to Odgar, the son of Aedd, King of Ireland, to ask for the caldron of Diwrnach Wyddel, his purveyor. And Odgar commanded him to give it. But Diwrnach said, "Heaven is my witness, if it would avail him any thing 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 caldron. 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 caldron, 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 caldron, 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 caldron 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 caldron.
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 endeavor 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."