Pwyll first met Rhiannon when she appeared as a beautiful woman dressed in gold and riding a white horse. Pwyll sent his horsemen after her but she was too fast. After three days he finally chased her himself. When he spoke asking her to stop Rhiannon told him she would rather marry him than the man she was being forced upon Thomas. She made a tryst with Pwyll and after a year from that day he won her from Thomas by tricking him to climb into a magic bag that Rhiannon had given to Pwyll-striking an agreement to free him in exchange for Rhiannon.