The title of this article is conjecture based on information revealed in the A Song of Ice and Fire novels or related material and may be subject to change.
Joss Stilwood is the squire of Ser Gregor Clegane, the Mountain.
Joss Stilwood squires for Ser Gregor Clegane, the Mountain, in the
Tourney of the Hand. After Ser Gregor is defeated in a joust by Ser Loras Tyrell, who was riding a mare in heat to upset Ser Gregor's stallion, he orders Joss to bring him his greatsword. Ser Gregor then beheads his horse in anger.
Joss squires for Gregor when he faces Prince
Oberyn Martell in the Second Trial by Combat of Tyrion Lannister.
Season One appearances
Winter Is Coming
Cripples, Bastards, and Broken Things
The Wolf and the Lion
A Golden Crown
You Win or You Die
The Pointy End
Fire and Blood
Season Four appearances
The Lion and the Rose
Breaker of Chains
First of His Name
The Laws of Gods and Men
The Mountain and the Viper The Watchers on the Wall
In the books
novels, Joss Stilwood is the squire of Ser A Song of Ice and Fire Gregor Clegane. He takes part in the gang rape of Layna, the daughter of an innkeeper.