As far as I know, Pierre Plantard's split with Philippe de Chérisey did not make headline news. As far as I know, it was only announced by Pierre Jarnac, in his book “Les Archives de Rennes-le-Château”, Tome 2, page 550 (1988); where the author reproduced a partial photocopy of a letter dated 22 May 1985 from Pierre Plantard announcing his split from Philippe de Chérisey.

Philippe de Chérisey died on 17 July 1985. There does not seem to have been a reconciliation of friendship between the two men.

Move forward to 1989-1992 and Pierre Plantard's revised history of the Priory of Sion. Philippe de Chérisey makes a sudden comeback – except some of his letters are typewritten, and Philippe de Chérisey was known for his handwritten correspondence. Another point, the Belgian address found on his “letters” is false. So this immediately throws a Red Flag on the whole situation. It strongly suggests that Pierre Plantard was back at playing his old tricks again.

A new member of the Priory of Sion is announced. His name is Bernard Gliot and he has contributed an article called “Les Cycles” in Vaincre, Septembre 1989, Number 3 (later published in “Le Cercle”, 1992). Not only that, Gliot reproduces – in re-touched fashion – one of the zodiacs from “Gisors et son secret...”. The writing CHYREN – PLANTARD, together with P. Plantard's signature, has been removed from the said zodiac.

In “Gisors et son secret...” the explanation for the zodiac was the year 1958. The Fifth French Republic commenced in 1958 and Plantard believed that the Age of Aquarius also commenced in 1958 (calculated from Julius Caesar’s crossing of the Rubicon River in 49 BC, which was the Age of Pisces, and 1958 was the Age of Aquarius).

“Les Cycles” is very Plantardesque in its esoterica. Among its mish-mash of claims is that the zodiac – originally taken from “Gisors et son secret” – relates to understanding passages found in Henri Boudet's book, “La Vraie Langue Celtique et le Cromleck de Rennes-les-Bains” (1886).

More to the point, the name “Bernard Gliot” seems to have been hi-jacked from the French astronomer's name, Bernard Lyot, 1897-1952.

Conclusion – another Pierre Plantard joke.