Kerry Wendell Thornley was an American author. He is known as the co-founder of Discordianism, in which context he is usually known as Omar Khayyam Ravenhurst or simply Lord Omar. He and Hill authored the religion's text Principia Discordia, Or, How I Found Goddess, and What I Did to Her When I Found Her. Thornley also was known for his 1962 manuscript The Idle Warriors, which was inspired by the activities of his acquaintance Lee Harvey Oswald before the 1963 assassination of John F. Kennedy.

Gregory Hill, better known by the pen name Malaclypse the Younger, was an American author. He is listed as author of the Principia Discordia, which was written with Kerry Wendell Thornley and others. He was also adapted as a character in The Illuminatus! Trilogy (1975). During the early years of circulation of the Principia Discordia, rumors claimed that the author of the book was Richard Nixon, Timothy Leary, or Robert Anton Wilson; or that the book and Malaclypse the Younger were both fictional inventions of Robert Anton Wilson, as with Abdul Alhazred's Necronomicon.