Matriarch of House Tyrell, Lady Olenna is not shy about sharing her opinions. She fought tirelessly to free her grandchildren from prison, even after discovering the High Sparrow was incorruptible. After Cersei's act of war killed Margaery and Loras, Olenna traveled to Dorne, where she entered into an alliance with Ellaria Sand in support of the Targaryen cause.
Lord of Highgarden, Warden of the South, and father to Queen Margaery, Mace Tyrell served as Master of Ships on the Small Council. When Cersei took charge of the Council, she added Master of Coin to his responsabilities and sent Mace to Braavos to renegotiate the kingdom's terms with the Iron Bank. He returned to find Margaery and Loras imprisoned, and worked with the Lannisters to rally Tyrell forces to free them. Along with his children, he was killed when the Sept of Baelor exploded.
Mace Tyrell's only daughter, Margaery, was a clever as she was beautiful. Widowed by both Renly Baratheon and King Joffrey, she married Joffrey's brother, Tommen, in an effort to maintain an alliance between the Tyrells and the Lannisters. She was taken into custody for bearing false witness before the gods when she lied to defend her brother Loras against accusations of perversion. After forming a relationship with the High Sparrow, Margaery persuaded her husband to accept an alliance between the Crown and the Faith. She later convinced her brother Loras to confess his crimes and swear off his inheritance at his trial in exchange for his freedom. She was among those killed when the Sept of Baelor exploded.
The handsome young Ser Loras was the secret lover of Renly Baratheon, for whom he served as Kingsguard. After Renly's murder, Loras unknowingly took a spy for Littlefinger, Olyvar, as his lover, though Loras was obligated to marry Cersei Lannister. Cersei engineered her fiancé's arrest by the Faith Militant to undermine the Tyrell's influence in Kings Landing. The arrest of the heir of Highgarden also ansnared his sister the queen, whi was imprisoned for perjuring herself to protect him. Physically and emotionally broken in prison, Loras led guilty to the Faith's charges against him and agreed to renounce the Tyrell name. He was among those killed when the Sept of Baelor exploded.