Docteur Hervé, one of the people allegedly linked to the fake Merovingian genealogies of Henri Lobineau, was alive in 1955 because he was referred to in a book dedication by Raymond Lindon (whose real name was Lindenbaum, 1901-1992); in his short story Le Secret des rois de France ou la véritable identité d'Arsène Lupin, written under his pen name of Valère Catogan, first published in 1955. We have discovered that the handwriting matches that of Raymond Lindon. The book was on sale on ebay.fr for 495 Euros. This information has been publicised by French authors Franck Daffos and Michel Vallet.

French author Michel Bussi commented that the first edition of Lindon's novel was extremely rare in his novel Code Lupin: Un Da Vinci Code normand (2006); and then a private French researcher found the first edition of Lindon's novel in Dresden, Germany that contained the dedication to Docteur Hervé.

It's possible that Lindon's novel – containing the dedication to Docteur Hervé – once belonged to Pierre Plantard and Philippe de Chérisey, and that they used its theme towards their creation of the Priory of Sion – Lindon's novel bears the familiar element of the treasure of the French Kings and the Priory of Sion documents are backdated to the mid-1950s; Philippe de Chérisey believed that the treasure of Rennes-le-Château was found in Maurice LeBlanc's 1924 novel, La Comtesse de Cagliostro. The very first Priory of Sion document, dating from 1964 (backdated to 1956, attributed to Henri Lobineau) was entitled Généalogie des Rois Mérovingiens et Origine des diverses Familles Françaises et Etrangères de Souche Mérovingienne d’Après L’Abbé Pichon, le Docteur Hervé et les Parchemins de l’Abbé Saunière de Rennes-le-Château (Aude).

The reason why Abbé Pichon (1731-1812) was added to the document is probably because he published Sacre et couronnement de Louis XVI, précédé de recherches sur le sacre des rois de France, et suivi d'un journal historique de ce qui s'est passé à cette cérémonie, avec figures gravées par Patas in 1775.

It's possible that Pierre Plantard and Philippe de Chérisey got acquainted with Lindon's novel containing the dedication to Docteur Hervé sometime between the late 1950s and early 1960s.