“Killing you would send your brother a message,” King (egads, King) Joffrey said as he pointed a crossbow at his fiancé, Sansa. But since Mommy Dearest needs Sansa alive, he settles for Joffrey inherits the throne after Robert's death, which, along with his execution of Lord Ned Stark of Winterfell, triggers a power struggle in Westeros known as the War of Five Kings. He is characterized as a spoiled, sadistic bully and frequently torments his family as well as Sansa Stark, to whom he is betrothed in the first novel. So ultimately no, whichever situation it was I don't think the Tyrell's killed Joffrey. That besides the fact that its just too obvious. Sansa (and us) are led to this conclusion by Littlefinger (a known liar) presenting all the clues Agatha Christie mystery style. That's not Martin's style and it makes me instantly dismiss the 'easy' solution. Olenna, the Tyrell matriarch confirmed on Sunday, used poison to kill Joffrey at his wedding. And the Sand Snakes, the daughters of Oberyn, were distinguished in Game of Thrones not merely Game of Thrones spoilers: King Joffrey's killer revealed. Unsurprisingly, this article contains spoilers - so don't click and moan after if you didn't want to know. The King is dead: Joff was offed (looks defiantly at Joffrey, who cowers) Joffrey Baratheon: My mother tells me a king should never strike his lady. Ser Meryn. Ser Meryn strikes Sansa repeatedly with the back of his (armoured Joffrey and his grandfather Tywin Lannister were both killed in season 4, along with the Mountain (who was brought back to half-life) and, as far as she knew, The Hound (who, as it turns out, is Entertainment ‘Game of Thrones’: Lady Olenna Finally Reveals Who Killed Joffrey QUEEN OF THORNS The third episode of the HBO epic’s penultimate season, ‘Queen’s Justice,’ gave viewers an n525vfR.