The place belonged to the Abbey Saint-Étienne in Baignes (16kms south) end of the 11th century, when the nave of Saint-Martin was built. The apse was added within the 12th century.

When in 1953 conservators washed and peeled off the last coat of white paint and plaster from the 12th century walls of the apse, they discovered - graffitti!

When in the 12th century the walls were completed, but not yet covered with plaster, some unknown person covered the side walls with graffiti. Over square meters!

On the southern side (seen here) are sketches of warlike situations.

A knight and his squire.
Remind me on Don Quixote and Sancho Panza.