Xavier Guichard was a French Director of Police, archaeologist and writer.

His 1936 book Eleusis Alesia: Enquête sur les origines de la civilisation européenne is an early example of speculative thinking concerning Earth mysteries

Earth mysteries

The term Earth mysteries describes an interest in a wide range of spiritual, quasi-religious and pseudo-scientific ideas focusing on cultural and religious beliefs about the Earth, generally with regard to particular geographical locations of historical significance.The study of ley lines...

, based on his observations of apparent alignments between Alesia

Alesia

-Places:France*Alesia , an ancient city in Gaul**Battle of Alesia*Alésia , a station in the Paris Métro*Rue d'Alésia, Paris*Le quartier Alésia, an unofficial district of Paris that mostly overlaps Petit-MontrougeUnited States...

-like place names on a map of France. His theories are analogous to those of his near-contemporary in the United Kingdom, Alfred Watkins

Alfred Watkins

Alfred Watkins was a businessman, self-taught amateur archaeologist and antiquarian who, while standing on a hillside in Herefordshire, England, in 1921 experienced a revelation and noticed on the British landscape the apparent arrangement of straight lines positioned along ancient features, and...

, concerning Ley line

Ley line

Ley lines are alleged alignments of a number of places of geographical and historical interest, such as ancient monuments and megaliths, natural ridge-tops and water-fords...

s.

Xavier Guichard appears as a character in the novels of Georges Simenon

Georges Simenon

Georges Joseph Christian Simenon was a Belgian writer. A prolific author who published nearly 200 novels and numerous short works, Simenon is best known for the creation of the fictional detective Maigret.-Early life and education:...

, where he is the superior of the fictional detective Jules Maigret.