Hand of the King
|Died||In or between 134 ᴀᴄ and 136 ᴀᴄ|
The World of Ice & Fire (mentioned)|
The Princess and the Queen (mentioned)
Ser Marston had kin in Dragonstone. He was the bastard son of Tom Tanglebeard’s sister by the knight who took her maidenhead. He was also Tom Tangletongue’s cousin. Marston had other "cousins" on Dragonstone but none of them were actual blood relations.
The Dance of the Dragons
When Rhaenyra Targaryen's dragons first appeared in the skies above King's Landing, Lord Larys Strong spirited King Aegon II Targaryen and his children out of the city. He concealed the fugitive king on a fishing skiff and put him in the care of Ser Marston. The skiff sailed for Dragonstone.
After his arrival Aegon stayed hidden on Dragonstone. The wounded Sunfyre eventually returned from Rook's Rest to Dragonstone and fought and killed the Grey Ghost. After his return Ser Marston and his cousins set sail to look for the Grey Ghost’s killer, whom they suspected was Sunfyre. Aegon and Sunfyre were reunited. While they both healed the Two Toms and Ser Marston returned to the other side of the island to seek out men willing to help them take Dragonstone castle.
Marston, Tom Tangletongue, and their men managed to take the castle but Lady Baela Targaryen managed to elude them, locate her dragon Moondancer and rise up on her to challenge Aegon and Sunfyre as they made their descent. After hitting the ground she dragged herself away from her dying dragon, Ser Alfred Broome drew his sword to slay her but Marston wrenched the blade from his hand, saving her life.
For his valor King Aegon named Marston to his Kingsguard. Marston, along with the other knights and lords present, did not speak a word of protest when King Aegon delivered his half sister to his dragon.
Reign of Aegon III
At some point during the regency of Aegon III Marston became Hand of the King, after Lord Thaddeus Rowan was arrested for alleged treason. Marston ordered the arrest of Lady Larra Rogare, already having arrested her brothers, but her husband Prince Viserys Targaryen and her brother-in-law King Aegon III Targaryen refused to give her up. Marston besieged them in Maegor's Holdfast for eighteen days, before he recalled his duty and fulfilled his king's command to arrest those who had implicated Lord Rowan and the Rogares falsely. Ser Marston was eventually slain by his own sworn brother, Ser Mervyn Flowers, when Marston attempted to arrest him.