Castelnau-de-Guers is a commune in the Hérault department in southern France. It is the birthplace of historian Michel Christol.
Wikipedia https://en.wikipedia.org/wiki/Castelnau-de-Guers
Official Website http://www.castelnau-de-guers.com/
Coordinates 43°26'1.236" N 3°26'20.679" E