The moment he vanished they set off for the court, and that night they slept together. And on the morrow Gronw rose up and subdued Ardudwy, and ruled it with Penllyn.
Then the tidings reached Math son of Mathonwy. Heaviness and grief Math felt within him, and Gwydion more than he by far. ÔLord,Õ said Gwydion, ÔI shall never rest till I have tidings of my nephew.Õ And he traversed Gwynedd and the length and breadth of Powys. Then he came to the house of a villein in Maenawr Bennardd and stayed there the night. And Gwydion learned of a sow there who would go out though no one could keep touch with her, neither was it known which way she went. ÔWilt thou do this for my sake,Õ asked Gwydion, Ônot to open the sty until I am on one side of the sty with thee?Õ
The next morning the swineherd roused Gwydion. And when the swineherd opened the sty, lo, she leapt forth at speed, and Gwydion followed her.