The Dossiers Secrets d'Henri Lobineau ("Secret Files of Henri Lobineau"), supposedly compiled by Philippe Toscan du Plantier, is a 27-page document which was deposited in the Bibliothèque nationale de France on 27 April 1967. The document purports to represent a part of the history of the Priory of Sion, and is widely considered to be a forgery created by Pierre Plantard and Philippe de Chérisey. 13 of the 27 pages of the document are taken from another document dating from 1964, also thought to have been authored by Plantard, called Généalogie des Rois Mérovingiens ("Genealogy of the Merovingian Kings"). This document contains genealogy diagrams which apparently show Plantard to be a descendant of the Merovingian king Dagobert II.
A pdf of the documents is at