Mace Tyrell is the head of House Tyrell and Lord of Highgarden. He holds dominion over The Reach. His wife is Alerie Hightower, and with her he has four children, Willas Tyrell, Ser Garlan Tyrell, Ser Loras Tyrell and Margaery Tyrell.
A Clash of KingsEdit
A Storm of SwordsEdit
Mace serves on the trial of Tyrion Lannister for the death of Joffrey I Baratheon. He is particularly angry over the ordeal given that Joffrey's poison could have easily killed Margaery Tyrell, who drank from the same cup. It is unknown whether or not he knew at the time that his mother, Olenna Tyrell, was responsible for the murder.
A Feast for CrowsEdit
Mace attends the wake of Lord Tywin Lannister, and afterwards he converses with Queen Regent Cersei Lannister, broaching several topics, including Tywin's replacement as King's Hand, the appointment of Garth Tyrell as Master of Coin, and the date of the wedding between Margaery and King Tommen I Baratheon.
Mace later talks with Cersei and Ser Jaime Lannister outside Baelor's Sept, in front of King Tommen I Baratheon, asking about the King's health. Jaime promises that Cersei will meet with him, later suggesting that she send him to siege Storm's End, as a way of getting him out of the city.
Cersei sends Mace away on a mission to capture Storm's End, so that she could plot against Margaery while he was gone. However, when they are both imprisoned due to accusations they made against one another, he returns to King's Landing.