Ssithnos

Ssithnos was the last Great Hierophant of Balance, in the time of the Ophidians on Serpent Isle. His death was blamed on the followers of Chaos, giving Order an excuse to storm Skullcrusher and murder the inhabitants, beginning the War of Imbalance. However, from all evidence gathered, it becomes clear that Calithiss had led her people against Ssithnos, and afterwards blamed Chaos in an attempt to gain full power for Order over the Serpent Isle.

Ssithnos was entombed on the Isle of Crypts. In Ultima VII Part Two, it was there that the Avatar spoke with him via the Summon Shade spell, to learn what to do to restore balance. After that, his soul escaped to the void, finally at peace.

Trivia

 * The letter from Ssithnos that the Avatar finds right at the beginning appear to be his last written words, written mere minutes before the Order forces stormed his fortress. The letter in its entirety can be read above. It also is found in Beyond the Serpent Pillars.