of Renly's kingsguard, to Riverrun. Upon hearing of her younger sons' supposed murder at the hands of Theon Greyjoy, Catelyn goes to confront the captive Jaime Lannister. Although the novel ends her storyline ambiguously, it is revealed at the beginning of the third novel that Catelyn set him free and asked Brienne to escort him to King's Landing in an attempt to exchange him for her daughters, who were still captives of Joffrey. This, however, causes problems for Robb and costs him an ally, House Karstark, which had held grudges against the Lannisters. A Storm of Swords Catelyn's brother Edmure Tully places Catelyn under house arrest at Riverrun, but Robb pardons her after he announces his wedding to Jeyne Westerling, invalidating his marriage proposal to House Frey. Lord Walder Frey agrees to forgive Robb if Edmure marries his daughter Roslin, and Catelyn travels to the Frey seat of the Twins to attend the wedding with Robb and other northern lords. However, Walder Frey and his men take revenge on Robb for his slight on their house by slaughtering the northern host, an act of treachery that became known as the "Red Wedding". In an attempt to save her son's life, Catelyn takes Aegon Frey hostage and kills him when Roose Bolton kills Robb regardless, but she still has her throat slashed by Raymund Frey. The Freys then mutilate Robb's corpse, and throw Catelyn's stripped naked corpse into the Green Fork in mockery of House Tully's tradition of river burial. Three days later, Catelyn's body is washed ashore downstream along with hundreds of other corpses, and a wolf pack led by Arya Stark's stray direwolf Nymeria is drawn to scavenge upon the dead. However, Arya is skinchanging into Nymeria at the time during her sleep, recognizes her mother's body, controls Nymeria to pull it out of the river and guards it against other wolves until the outlaw band Brotherhood Without Banners passes by to repel the wolves. Catelyn is then resurrected by Lord Beric Dondarrion, who sacrifices his life force to revive her in repayment to her husband Eddard's honoring. However, the period of time she spent deceased has caused Catelyn's body to partly decay, disfiguring her looks; furthermore, upon her reanimation she loses most of her previous kind personality, except for her hatred of the Lannisters and the Freys. Catelyn then assumes command of the Brotherhood, and changes their aim