Founder of the Church of Satan, author of the Satanic Bible
Anton Szandor LaVey (born Howard Stanton Levey; April 11, 1930 – October 29, 1997) was an American author, musician, and LaVeyan Satanist. He was the founder of the Church of Satan, the philosophy of LaVeyan Satanism, and the concept of Satanism. He authored several books, including The Satanic Bible, The Satanic Rituals, The Satanic Witch, The Devil's Notebook, and Satan Speaks! In addition, he released three albums, including The Satanic Mass, Satan Takes a Holiday, and Strange Music.
https://en.wikipedia.org/wiki/Anton_LaVey