". . . Saunière found a treasure that included much more than valuable antiquities. Buried in Rennes-le-Château were documents confirming that Jesus Christ had come to live in France with his family and that his child initiated a dynasty which eventually became known as the Merovingian Kings of France." And of course the Templars were involved in this too.
"Notes on a Strange World: The Secrets of Rennes-le-Château" by Massimo Polidoro, at CSICOP's website.