text: This man receives a gift of magical pigs from an ally, but they are stolen, leading to a war between this man and the thief that ends when this man dies in single combat at a yellow ford.
full_question: This man receives a gift of magical pigs from an ally, but they are stolen, leading to a war between this man and the thief that ends when this man dies in single combat at a yellow ford. According to the Stanzas of the Graves, he was buried "where the waves beat against the land" at Aber Gwenoli. In another story, this man entered a castle and saw four endless chains attached to a golden bowl; when he touched the bowl, he became stuck to the floor. He was given a name referring to his golden hair by his foster father Teyrnon, who found him after cutting off the arm of a horse-stealing beast. He brought back Manawydan as a second husband for his mother shortly after himself marrying Cigfa. This man lost his role as king of Dyfed after being killed in one-on-one combat by Gwydion. Shortly after his birth, his mother had puppy blood smeared on her face so that her maidens accuse her of infanticide. For 10 points, name this hero who appears in all four branches of the Mabinogion, the son of Pwyll and Rhiannon.
first_sentence: This man receives a gift of magical pigs from an ally, but they are stolen, leading to a war between this man and the thief that ends when this man dies in single combat at a yellow ford.
raw_answer: Pryderi [or Gwri Wallt Euryn; or Gwri of the Golden Hair]