At some point in the past, war broke out between Caerleon and Camelot. He was defeated by Uther at the Battle of Denaria, but he retreated to the Castle of Fyrien. Victory would have been denied to Camelot, if Uther hadn't known about a secret labyrinth beneath the castle. Fyrien was in fact greedy, and to avoid Camelot's levies he had dug tunnels from the castle to the sea. That way he could smuggle goods into the kingdom without anyone knowing (The Castle of Fyrien).
At some point, Gorlois befriended Queen Annis and possibly King Caerleon.
Following the death of Uther, he began raiding Camelot. During one of these raids, he was eventually led into a trap and captured. Following his uncle's advice, Arthur tried to force him to sign a treaty. He refused, which made Arthur reluctantly order him killed. His body was later returned to his kingdom. This event led to the brief war between Camelot and his land which was led by his wife (His Father's Son).
|Series 4 Enemies|
|The Darkest Hour: Morgana • Morgause • The Dorocha • The Cailleach • Agravaine • Wilddeoren • Wyvern|
The Wicked Day: King Odin • Morgana • Agravaine • The Gleeman • Geldred
Aithusa: Julius Borden • King Odin
His Father's Son: Morgana • Agravaine • Queen Annis • King Caerleon • Derian
A Servant of Two Masters: Morgana • Agravaine • Fomorroh • Merlin (indirect)
The Secret Sharer: Morgana • Agravaine • Alator • Orn
Lamia: Lamia • Agravaine
Lancelot du Lac: Morgana • Lancelot (Shade) • Agravaine • Dochraid
A Herald of the New Age: Shrine Boy • Elyan (indirect)
The Hunter's Heart: Morgana • Agravaine • Helios
The Sword in the Stone: Morgana • Agravaine • Helios • Aithusa • Nathair