Nefertum
From The Stargate Omnipedia
Son of Sekhmet, identified with a symbol of a blue-lotus blossom. Nefertum was a Goa'uld who once brought Humans to planet Bedrosia, probably forcing them into slavery. He forged the Book of Nefertum, similar Earth-based religious texts, and used it to govern the people after he left.
His current whereabouts are not known.
KEY EPISODE
New Ground - Though is presence has not been in the vicinity of Bedrosia for countless years, Nefertum's brain-washing book still guides an entire planet into war.