Note 3 — Chapter IX · Place-name Stories
Reading edition
ii. 56a:—Pryderi son of Pwyỻ Head of Annwn with the swine of Pendaran of Dyfed his foster father. The swine were the seven brought away by Pwyỻ Head of Annwn and given by him to Pendaran of Dyfed his foster father; and the Glen of the Cuch was the place where they were kept. The reason why Pryderi is called a mighty swineherd is that no one could prevail over him either by fraud or by force3.