Sven (later "Sven One-Eyed") abducted Thyra tied her to a tree and stripped her half naked. When Thyra's father, Earl Ragnar, heard what Sven has done, he crushed one of Sven's eyes. Years later Sven helped his father burn down Earl Ragnar's home and kill everyone who lived there except Ragnar, Uhtred and Brida, who were from the house, and Thyra, whom he took captive and prostituted. Thyra went mad. Years later, Ragnar, with Uhtred's help, captured Kjartan's fortress and killed both Sven and his father.