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  ====Season 4====
  Tywin has the Stark ancestral sword Ice melted down into two swords, one of which he gives to Jaime, though he disowns him after Jaime refuses to resign from the Kingsguard to become Tywin's heir. When Tyrion is accused of poisoning Joffrey, Tywin asks Prince Oberyn Martell to serve as one of the judges in Tyrion's trial. Though Oberyn despises Tywin for ordering the death of his sister, niece and nephew during the sack of King's Landing, he agrees when Tywin offers him justice against their murderer, Ser Gregor Clegane. Tywin also presses Cersei to wed Loras in order to use House Tyrell's wealth to pay off the Crown's debts to the Iron Bank of Braavos, but is forced to back down when Cersei threatens to reveal her incestuous affair with Jaime. Tywin has an affair with the prostitute Shae, formerly Tyrion's mistress. Tyrion discovers this during his escape from King's Landing and strangles Shae before confronting Tywin on the privy. When Tyrion admits that he loved Shae, Tywin repeatedly dismisses her as a whore, prompting Tyrion to shoot him with a crossbow, killing him.