Balor was a Goa'uld System Lord who ruled over the planet Magtireth. Balor had been gifted one of the Eyes of the Goa'uld from Ra, the Eye of Balor. An uprising from Dagda, Manannan mac Lir, and other minor Goa'uld of Danu's brood led to his downfall and death. It was Lugh who struck the killing blow. His holdings were split among Dagda and Manannan, and were enough to propel them each to the rank of System Lord. (RPG: "Living Gods: Stargate System Lords")