Then she sent unto Gronw, and bade him be in ambush on the hill which is now called Bryn Kyvergyr, on the bank of the river Cynvael. She caused also to be collected all the goats that were in the Cantrev, and had them brought to the other side of the river, opposite Bryn Kyvergyr.
And the next day she spoke thus. “Lord,” said she, “I have caused the roof and the bath to be prepared, and lo! they are ready.” “Well,” said Llew, “we will go gladly to look at them.”
The day after they came and looked at the bath. “Wilt thou go into the bath, lord?” said she. “Willingly will I go in,” he answered. So into the bath he went, and he anointed himself. “Lord,” said she, “behold the animals which thou didst speak of as being called bucks.” “Well,” said he, “cause one of them to be caught and brought here.” And the buck was brought. Then Llew rose out of the bath, and put on his trowsers, and he placed one foot on the edge of the bath and the other on the buck’s back.
Thereupon Gronw rose up from the bill which is called Bryn Kyvergyr, and he rested on one knee, and flung the poisoned dart and struck him on the side, so that the shaft started out, but the head of the dart remained in. Then he flew up in the form of an eagle and gave a fearful scream. And thenceforth was he no more seen.
As soon as he departed Gronw and Blodeuwedd went together unto the palace that night. And the next day Gronw arose and took possession of Ardudwy. And after he had overcome the land, he ruled over it, so that Ardudwy and Penllyn were both under his sway.
Then these tidings reached Math the son of Mathonwy. And heaviness and grief came upon Math, and much more upon Gwydion than upon him. “Lord,” said Gwydion, “I shall never rest until I have tidings of my nephew.” “Verily,” said Math, “may Heaven be thy strength.” Then Gwydion set forth and began to go forward. And he went through Gwynedd and Powys to the confines. And when he had done so, he went into Arvon, and came to the house of a vassal, in Maenawr Penardd. And he alighted at the house, and stayed there that night. The man of the house and his house-hold came in, and last of all came there the swineherd. Said the man of the house to the swineherd, “Well, youth, hath thy sow come in to-night?” “She hath,” said he, “and is this instant returned to the pigs.” “Where doth this sow go to?” said Gwydion. “Every day, when the sty is opened, she goeth forth and none can catch sight of her, neither is it known whither she goeth more than if she sank into the earth.” “Wilt thou grant unto me,” said Gwydion, “not to open the sty until I am beside the sty with thee?” “This will I do, right gladly,” he answered.
That night they went to rest; and as soon as the swineherd saw the light of day, he awoke Gwydion. And Gwydion arose and dressed himself, and went with the swineherd, and stood beside the sty. Then the swineherd opened the sty. And as soon as he opened it, behold she leaped forth, and set off with great speed. And Gwydion followed her, and she went against the course of a river, and made for a brook, which is now called Nant y Llew. And there she halted and began feeding. And Gwydion came under the tree, and looked what it might be that the sow was feeding on. And he saw that she was eating putrid flesh and vermin. Then looked he up to the top of the tree, and as he looked he beheld on the top of the tree an eagle, and when the eagle shook itself, there fell vermin and putrid flesh from off it, and these the sow devoured. And it seemed to him that the eagle was Llew. And he sang an Englyn:—
“Oak that grows between the two banks;
Darkened is the sky and hill!
Shall I not tell him by his wounds,
That this is Llew?”
Upon this the eagle came down until he reached the centre of the tree. And Gwydion sang another Englyn:—
“Oak that grows in upland ground,
Is it not wetted by the rain? Has it not been drenched
By nine score tempests?
It bears in its branches Llew Llaw Gyffes!”