Graham Simmans spent 15 years living in a caravan in Rennes-le-Château during his retirement, acting as a voluntary “tourist guide”

Timothy Wallace-Murphy, Marilyn Hopkins, Graham Simmans
-Rex Deus: The True Mystery of Rennes-le-Château And The Dynasty of Jesus (Element Books, 2000)

Graham Simmans
-Jesus After The Crucifixion: From Jerusalem To Rennes-le-Château (afterword by Ingrid Riedel-Karp, Bear & Company, 2007)