Fontenelles Abbey was an Augustinian monastery in the former commune of Saint-André-d'Ornay. The abbey was founded in 1210 by local landowners Guillaume de Mauléon, seigneur of Talmont-Saint-Hilaire, and his wife Béatrice de Machecoul, lady of the manors of La Roche-sur-Yon and Luçon. The monastery was originally Benedictine but after a lawsuit broke out between the abbot of Fontenelles and the abbot of Marmoutier, a prestigious Benedictine monastery, the community became Augustinian, as a daughter house of the nearby Chancelade Abbey, in about 1224.
The church was damaged during the Hundred Years' War. In 1533 there were only 9 monks here. In 1562 during the Wars of Religion Protestants attacked the abbey, killing some of the monks, set it on fire and largely destroyed it. In particular they damaged the church to the extent that part of nave collapsed, leaving it permanently shortened, with a Greek cross floor plan. Protestants attacked it again in the 1620s but were forced to repair the damage. The monastery was restored from 1669 onwards by the canons of the Congrégation de France.
The abbey, by that time containing only three monks, was suppressed during the French Revolution in 1791. In 1794 the passage of the 'infernal columns' through the Vendée left it entirely abandoned. The site was later used for agriculture: the church was turned into a barn and the abbot's lodging into accommodation for labourers. Continued neglect brought about the collapse of most of the remaining buildings including in 1935 the collapse of the south transept of what was left of the church. The site remains private property.
The monastery was built in granite in the Angevin Gothic style, transitional between Romanesque and Gothic. The truncated church is the most intact structure remaining, and contains the tomb of either the foundress Béatrice de Machecoul or her daughter Jeanne, Vicomtesse de Thouars, consisting of a recumbent effigy (gisant) in an arched recess (arcosolium) with small figures. There are also substantial remains of the chapter room but the rest of the former structures are in ruins.
References:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.