Tyrek Lannister

Tyrek grows up as the only child of Ser Tygett Lannister, Tywin's younger brother, and Darlessa Marbrand. As a teenager he enters King Robert I's service as one of his squires, alongside another boy of House Lannister. He's described as curly-haired and golden, with the green eyes he shares with his cousin, Queen Cersei.

With the war already under way, the Lannisters marry him to Lady Ermesande Hayford, the last of her house and still in the cradle, which gives Tyrek the title Lord Protector of Hayford. The other squires, with barracks humor, start calling him Nan.

When Kings Stannis and Renly leave the capital stripped of grain and cattle, hunger spreads through King's Landing. The royal procession is returning to the Red Keep after seeing Princess Myrcella off at the docks when a starving, furious crowd attacks it along the way. Several die in the riot, and somewhere in the chaos Tyrek vanishes without a trace. Tywin and Tyrion set men to search for him, but neither he nor his body ever turns up.

Ser Addam Marbrand, the new commander of the gold cloaks, takes over the search, but he too turns up no trace of where Tyrek went.

In time, Jaime starts to suspect Varys. Tyrek, as Robert's former squire, might have known something about the circumstances of the king's death — and the eunuch, who didn't go down to the docks with the rest of the court that day, would have had an easy chance to use his agents to spirit him away amid the riot's chaos.