He could change day into night, turn the tides, and legend has it, his spells helped build Camelot itself.
Gaius on Sigan[src]

Cornelius Sigan was the greatest sorcerer Camelot has ever known, before Merlin.


Early Life

It is said that when he was first alive he could turn the tides, change day into night, and even helped build Camelot itself. His life's mission was to defeat death and he swore to one day return from the grave. Sigan became too powerful and the King at the time ordered him to be executed. Before his death, Sigan cursed Camelot, saying that he would one day return and raze the city to the ground. It was said that he didn't want his wealth and power to die with him and that up until his execution he worked on a way to cheat death.


This was revealed to be true hundreds of years later. After Camelot miners uncovered his tomb, a thief called Cedric worked his way up to a position in the Royal Household and used this to enter the tomb.

Cornelius Sigan in the body of Cedric

He intended to steal Sigan's riches and jewels, including a large blue heartshaped jewel that one of the miners, Tom, had drunkenly told him about. The jewel contained Sigan's soul and when Cedric broke the jewel out of its setting, he became possessed by Cornelius Sigan'ss soul. Sigan subsequently launching an attack on Camelot that forced Merlin to ask Kilgharrah for help.

Merlin cornelius sigans soul spell

Merlin facing Cornelius Sigan's soul

After witnessing Merlin's magic , Sigan suggested that he and Merlin form an alliance. However, when Merlin rejected the offer, Sigan attempted to possess him in order to bind their powers. Using a spell that Kilgharrah had recently taught him, Merlin was able to trap Sigan's soul back inside the jewel. Uther had the vault where the tomb and soul of Cornelius Sigan lay resealed (The Curse of Cornelius Sigan).


Cornelius Sigan was described as one of the most powerful sorcerers ever to live.While he was alive, he was said to be able control the tides and change night to day. His powers were so great that he was able to immortalise his own soul, keeping it alive after his death, by containing it in a jewel.

Merlin sigan spell1

Upon gaining a new body, his powers remained intact, as he was able to possess another and could animate and control every gargoyle in Camelot.

He was only defeated by an ancient and powerful spell that the Great Dragon told Merlin, which trapped his soul back inside the jewel.


  • According to Gaius, "In the Old Religion, the name Sigan means raven."
  • Cornelius Sigan shares similarities with the character of Lord Voldemort from the Harry Potter series by J.K. Rowling.


Series 2 Enemies
The Curse of Cornelius Sigan: Cedric † • Cornelius Sigan † • Living Gargoyles
The Once and Future Queen: King OdinMyror
The Nightmare Begins: SerketsUther Pendragon
Lancelot and Guinevere: KendrickHengistWilddeoren
Beauty and the Beast: Troll † • Lady Catrina (indirect) † • JonasUther Pendragon (indirect) †
The Witchfinder: AredianUther Pendragon
The Sins of the Father: Morgause † • King OdinUther Pendragon
The Lady of the Lake: HaligFreya (indirect) †
Sweet Dreams: King AlinedTricklerLady Vivian (indirect) • King Olaf
The Witch's Quickening: AlvarrMorgana † • Mordred † • EnmyriaKilgharrah
The Fires of Idirsholas: Morgause † • Morgana † • Knights of MedhirKilgharrah
The Last Dragonlord: KilgharrahAsgerd
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