H.P. Lovecraft
Howard Philips Lovecraft (1890-1937) was an American fantasy, science fiction, and horror writer. He is most known for his invention of a Cthulu mythos and a fictional book called the Necronomicon which was hyped in his books to be capable of calling back ancient gods of death and destruction.
The Necronomicon Anti-FAQ state that:
"Why did the novelist H.P. Lovecraft claim to have invented the Necronomicon?
The answer to this interesting question lies in two people: the poet and magician Aleister Crowley, and a Brooklyn milliner called Sonia Greene. There is no question that Crowley read Dee's translation of the Necronomicon in the Bodleian, probably while researching Dee's papers; too many passages in Crowley's "Book of the Law" read like a transcription of passages in that translation. Either that, or Crowley, who claimed to remember his life as Edward Kelly in a previous incarnation, remembered it from his previous life!"