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Books about Plantard:
"Qui suis-je?" Pierre Plantard
Dynamic Random Walks: Theory and Applications [Paperback]  (Author) Nadine Guillotin-Plantard (2006)
Les Merovingiens a Rennes-le-Chateau, mythes ou realites: Reponse a messieurs Plantard, Lincoln, Vazard et cie... by Richard Bordes (1984)
Wiki information Plantard:
Pierre Plantard de Saint-Clair was a French draughtsman, best known for being the principal perpetrator of the Priory of Sion hoax, by which he claimed from the 1960s onwards that he was a direct and legitimate male line Merovingian descendant of...
Sylvie Plantard is an actress.