 Sède's book contained reproductions of parchments allegedly discovered by Saunière alluding to the survival of the line of Dagobert II, from which Plantard claimed descent.Plantard and Sède fell out over book royalties and Philippe de Chérisey, Plantard's friend, was revealed to have forged some parchments as part of a putative plot.Plantard and Chérisey lodged documents relating to the Prieuré de Sion in France's Bibliothèque Nationale.