Timeline

Heritage classified

Key figures

Origin and history

The castle of Saint-Mesmin, located in Saint-André-sur-Sèvre (Deux-Sèvres), is a medieval fortress built around 1370 by Pierre de Montfaucon, local lord. His hexagonal plan, flanked by seven horse-drawn iron towers and surrounded by moat fed by the brook le Sevreau, made it a strategic stronghold dependent on the Barony of Parthenay. The conflicts with the suzerain Guillaume La archbishop led in 1375 to the partial destruction of the castle after unauthorized fortification work, followed by a lengthy trial before the Paris Parliament.

In the 15th century, the Montfaucon family erected a 28-metre dungeon on the site of an existing tower, with machicoulis and gunboats, reflecting the evolution of military techniques. The castle underwent a major modernization in the 17th century under the families Petit de La Guierche then de Vasselot, with the addition of windows, fireplaces and roofs still visible today. Abandoned in 1766, he was burned in 1794 by the Infernal Columns during the Vendée Wars, then served as a military hospital in 1914–15.

Purchased in 1818 by the Proust family, the castle, in partial ruin after a collapse in 1983, was saved by the Association A.CHA.S.ME. (1990–2003), which launched its restoration. Since 2003, it has been run by a joint union between the Deux-Sèvres and Vendée departments. Ranked Historic Monument in 1993, it opens today to the public with thematic visits and medieval animations, while continuing its renovation (roofs, dungeon, farm body).

The history of the castle is marked by feudal conflicts (14th century), architectural transformations (17th century) and revolutionary events (1794–96). Its dungeon, archeries and entrance chestnut testify to its defensive role, while its interiors (seigneurial room, chapel) evoke its residential vocation. The battle of 1796, between 40 Vendéens and 250 Republicans, illustrates his involvement in civil wars.

The site, located on the border between Nouvelle-Aquitaine and Pays de la Loire, benefits from an interregional partnership for its preservation. Recent excavations and restorations (2021–2022) have highlighted its medieval elements (bridge-levis, mâchicoulis) and its classic amenities (orangery, salons).

Future

The castle was restored from the 1980s and is now owned by the departments of Vendée and Deux-Sèvres, which open it to the visit.

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