Camelot

Camelot is a planet inhabited by a midieval level population who were once ruled by King Arthur. many of the Arthurian legends there differe from the Tau'ri legends: Arthur defeated Mordred in battle, and Merlin was viewed as a malacious trickster. The planet was where Merlin hid his research on the Sangraal, so prevent the Ancients and the Ori from finding it. He locked his research in a library that contained a holographic guardian, and spread rumors that the library was cursed. Cameron Mitchell and Daniel Jackson were able to defeat the guardian, which then revealed a great treasure the two gave to people of Camelot. They also learned that Arthur had left to quest for the Sangraal to one of three planets: Castiana, Sahal, and Vagonbrei.