Below, taken from Pierre Jarnac’s Les Archives de Rennes-le-Château (1988), is Marius Fatin’s interest in landscape geometry and what seems to be based upon On The Mysteries of The Egyptians, Chaldeans, and Assyrians – attributed to the Syrian Neoplatonist philosopher, Iamblichus (245 – 325AD).

It is certainly debatable if this is of any importance and it certainly does not link Marius Fatin with Henri Boudet’s La Vraie Langue Celtique.