Pwyll pen Annwfn: POO-ihl pin an-OO-vin
Welsh: "Sense, head of the Otherworld"
Alternate name for Pwyll penduc Dyfed. He gained this name by switching places with Arawn, the lord of Annwfn, for a year and a day, and then fighting Hafgan, Arawn's enemy.
As the "Head of Annwfn," Pwyll was possessor of magic swine and of a magic cauldron, sometimes identified with the Holy Grail.