Surveys and test pits have identified more than 20 different constructions, some of which were built as early as the middle of the 1st century A.D. They belong to a large agricultural holding consisting of a luxurious residence and numerous annexes linked to production (barns, forge, mill, etc.).

This villa reached its peak at the end of the 2nd century. It then occupied more than 3 hectares. The mode of occupation changed from the end of the 3rd century: only the agricultural buildings were then inhabited. The previous residence was abandoned and then destroyed.

Florian Sarreste, "Mont-Saint-Jean -Roullée" [archaeological note], ADLFI. Archéologie de la France -Informations, Pays de la Loire, online 20 September 2020: journals.openedition.org.