Math, son of Mathonwy
And that night they journeyed as far as the upper part of Ceredigiawn, to the place which, from that cause, is called Mochdrev still. And the next day they took their course through Melenydd, and came that night to the town which is likewise for that reason called Mochdrev, between Keri and Arwystli. And thence they journeyed forward; and that night they came as far as that Commot in Powys, which also upon account thereof is called Mochnant, and there tarried they that night. And they journeyed thence to the Cantrev of Rhos, and the place where they were that night is still called Mochdrev.
"My men," said Gwydion, "we must push forward to the fastnesses of Gwynedd with these animals, for there is a gathering of hosts in pursuit of us."
So they journeyed on to the highest town of Arllechwedd, and there they made a sty for the swine, and therefore was the name of Creuwyryon given to that town. And after they had made the sty for the swine, they proceeded to Math the son of Mathonwy, at Caer Dathyl. And when they came there, the country was rising.
"What news is there here?" asked Gwydion. "Pryderi is assembling one-and-twenty Cantrevs to pursue after
you," answered they.
"It is marvellous that you should have journeyed so slowly." "Where are the animals whereof you went in quest?" said Math.
"They have had a sty made for them in the other Cantrev below," said Gwydion.
Thereupon, lo, they heard the trumpets and the host in the land, and they arrayed themselves and set forward and came to Penardd in Arvon.
And at night Gwydion the son of Don, and Gilvaethwy his brother, returned to Caerdathyl; and Gilvaethwy took Math the son of Mathonwy's couch. And while he turned out the other damsels from the room discourteously, he made Goewin unwillingly remain. And when they saw the day on the morrow, they went back unto the place where Math the son of Mathonwy was with his host; and when they came there, the warriors were taking counsel in what district they should await the coming of Pryderi, and the men of the South. So they went in to the council. And it was resolved to wait in the strongholds of Gwynedd, in Arvon. So within the two Maenors they took their stand, Maenor Penardd and Maenor Coed Alun. And there Pryderi attacked them, and there the combat took place. And great was the slaughter on both sides; but the men
of the South were forced to flee. And they fled unto the place which is still called Nantcall. And thither did they follow them, and they made a vast slaughter of them there, so that they fled again as far as the place called Dol Pen Maen, and there they halted and sought to make peace.
And that he might have peace, Pryderi gave hostages, Gwrgi Gwastra gave he and three-and-twenty others, sons of nobles. And after this they journeyed in peace even unto Traeth Mawr; but as they went on together towards Melenryd, the men on foot could not be restrained from shooting.
Pryderi despatched unto Math an embassy to pray him to forbid his people, and to leave it between him and Gwydion the son of Don for that he had caused all this. And the messengers came to Math.
"Of a truth," said Math, "I call Heaven to witness, if it be pleasing unto Gwydion the son of Don, I will so leave it gladly. Never will I compel any to go to fight but that we ourselves should do our utmost."
"Verily," said the messengers, "Pryderi saith that it were more fair that the man who did him this wrong should oppose his own body to his, and let his people remain unscathed."
"I declare to Heaven, I will not ask the men of Gwynedd to fight because of me. If I am allowed to fight Pryderi myself, gladly will I oppose my body to his."
And this answer they took back to Pryderi.
"Truly," said Pryderi, "I shall require no one to demand my rights but myself."