The Sion Revelation: The Truth About the Guardians of Christ's Sacred Bloodline - Lynn Picknett, Clive Prince - Google Books

http://books.google.de/books?id=KEC03mtpBagC&pg=PA115&lpg=PA115&dq=roger+lhomoy+1904&source=bl&ots=6L9SJjisP8&sig=nn-Vfnol-xhw9h

An essential notion in the #1 New York Times bestseller The Da Vinci Code is the existence of an age-old French society, the Priory of Sion, whose task it is to protect Christ's sacred bloodline. In The Sion Revelation, Picknett and Prince reveal the story…