Margaery Tyrell (seasons 2–6) portrayed by Natalie Dormer. Margaery of House Tyrell is the only daughter of Lord Mace Tyrell and granddaughter to Lady Olenna Tyrell, as well as wife to Renly Baratheon when introduced to the series. She is cunning but kind-hearted, and dreams of being the queen. When Renly Baratheon is killed by a shadow demon, Petyr Baelish arranges for the Tyrells to ally with the Lannisters. The Tyrells move to King's Landing and Margaery is immediately betrothed to the sadistic King Joffrey Baratheon. Margaery and Olenna spend time in the city's gardens, scheming together and organising their political tactics. When Lady Olenna poisons Joffrey at his wedding to Margaery, the timid and innocent King Tommen Baratheon is crowned as his successor. Margaery marries Tommen and the two become happy together, and Tommen falls deeply in love with Margaery. Their relationship is brief, however. Cersei Lannister gives power to King's Landing faith militant group, the Sparrows, in order to challenge the Tyrells' influence in the capital following the death of Tywin Lannister. Margaery and her brother Loras Tyrell are imprisoned by the Sparrows -- Loras for his alleged homosexuality, and Margaery for hiding Loras' secrets. Cersei herself is then arrested by the Sparrows for her incestuous affairs with Lancel Lannister and Jaime Lannister. While a prisoner of the Sparrows, Margaery manipulates their leader, the High Sparrow, into believing that she has converted to the Faith of the Seven. Despite a failed attempt by her family to forcefully remove her from under the High Sparrow's captivity, he comes to enjoy Margaery's company and believes her lies about her faithfulness. In an attempt to soon free herself, Margaery convinces Tommen to join the Crown and the Faith. Her plans are foiled, however, on the day of Cersei Lannister's trial at the Sept of Baelor. Instead of appearing for her trial, Cersei rigs the Sept with wildfire and destroys it, massacring the hundreds of attendees inside -- including Margaery, Loras, Mace, Lancel Lannister, the High Sparrow, and several of the King's Landing population. Witnessing the event from his quarters in the Red Keep, Tommen, having seen his wife perish at the hands of his mother, commits suicide by throwing himself from a high window.