Aegon III's Distrust of Marston Waters

Aegon III’s distrust of Marston Waters turned a dispute over who governed a child king into a personal reckoning over protection, obedience, and remembered failure. Marston offered his sword and his oath as proof that he served Aegon; the king instead saw a man who had once stood beside him without preventing a terrible loss, and who now wanted him to leave the only refuge he trusted.

A Kingsguard and a King in Sanctuary

During the secret siege of Maegor’s Holdfast, Aegon III and his brother Viserys remained behind the barred gates while Marston Waters controlled the rest of the Red Keep with his Kingsguard. Outside the castle walls, Lucas Leygood and the gold cloaks held King’s Landing. On the morning after the holdfast was secured, Marston appeared before it and demanded that Aegon come out. He presented his actions as protection from false friends and traitors, and defended the dead Kingsguard knight Amaury by emphasizing that Amaury had been sworn to give his life for the king.

Aegon did not accept Marston’s account of what protection required. He answered that Sandoq the Shadow had obeyed the king’s command to leave Amaury alone, whereas Amaury had refused it. For Aegon, the episode was not simply a question of whether a Kingsguard had died in the king’s service. It was also a question of whether sworn service meant obeying the king himself. Marston’s demand that Aegon leave his sanctuary therefore met a king already unwilling to treat the Lord Commander’s judgment as a substitute for his own.

Competing Claims to Authority

Marston defended his position by drawing a distinction between a king who was still a child and one who had come of age. Kingsguard vows required obedience to the king, he acknowledged, but while Aegon remained a minor, Marston argued, the knights were bound to obey the Hand, whose voice stood for the king’s. Aegon rejected that account of delegated authority: Lord Thaddeus Rowan, he insisted, was his Hand.

Marston answered that Thaddeus had sold the realm to Lys and should answer for the charge. He then claimed that he would serve as Hand until Thaddeus’s guilt or innocence could be established, swore that no one would harm Aegon while he stood beside him, and knelt with his sword drawn. The gestures were an effort to make his promise visible, but they did not persuade the king. Aegon’s refusal to return to the battlements after answering him, and his silence through the following days, show how little force Marston’s assurances had with him. The issue was not only which man held office: Aegon would not grant Marston the trust that would make the claim credible.

The Memory Behind the Refusal

Aegon made the source of his distrust explicit. Marston, he recalled, had stood beside him when a dragon killed his mother, and had only watched. Now, with the king’s brother’s wife in danger, Aegon would not allow Marston to stand by again while others acted against her. The memory joined two moments in the king’s response: the earlier failure to protect his mother and the immediate fear that his refusal to emerge might leave another person exposed. His answer framed the siege not as a contest between a lawful Hand and a disobedient child, but as a test of whether Marston’s presence could be relied upon when protection mattered.

Marston’s own history complicates the confrontation without undoing Aegon’s judgment. He had risen from bastard birth to knighthood and a place in Aegon II’s retinue, then advanced to Lord Commander of the Kingsguard and, during Aegon III’s minority, the most powerful position in the realm. His kinship with fisherfolk on Dragonstone had helped Larys Strong choose him to hide the king during Rhaenyra’s ascendancy. Yet when the crisis at Maegor’s Holdfast reached its decisive point, Marston hesitated. He would not order an assault on the king he had sworn to protect, and continued to rely on appeals, negotiation, and perhaps the prospect that the besieged household would run short of supplies. His restraint could be understood as fidelity to his vows; to Aegon, it did not erase the earlier memory of helplessness.

An Unresolved Breach

Marston tried repeatedly to end the standoff through words. He and Grand Maester Munkun appealed to the king to leave; Marston moved from pleas to threats and bargaining, while Septon Bernard prayed for Aegon to return to what he considered wisdom. The approaches produced little response. Aegon remained stubbornly silent except when Gareth Long suggested that someone might be punished for his refusal: then Aegon warned against taking that anger out on Gaemon Palehair.

The confrontation exposed a deep mismatch between the two men’s understandings of service. Marston treated obedience during the king’s minority as a chain of delegated duties running through the Hand. Aegon treated loyalty as something tested by action, and judged Marston against what he remembered him failing to do. The evidence records the siege lasting eighteen days and notes that Thaddeus Rowan was brought forward in chains on its twelfth day, but it does not resolve Aegon’s distrust in this encounter. What it does establish is that Marston’s titles, oath, kneeling posture, and offer of personal protection could not overcome the king’s memory of having once been left unprotected.