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Origin and history

Devesset is a former foundation of the Hospitallers of Saint-Jean-de-Jérusalem, attested as early as 1246 in the Haut-Vivarais (Ardèche). Probably created by brothers of Saint John's Commandory, the Chevalerie du Puy, it became in the 13th century a castrum combining fortifications and a villa nova. Hospitallers also established a parish, and their possessions spread after 1312 with the devolution of Templar property. Several commanders, such as Pons de Fay or Raynaud de Fay, hold major roles in the Language of Auvergne.

In the 15th century, the commandory was rebuilt almost entirely by the great prior Jean Cottet after repeated destructions (wars, fires, road attacks). It then houses a fortified house, three round towers, and a parish church. After the Revolution, sold as a national property in 1796, it was partially destroyed in 1838 before being turned into a farm. The current remains, inscribed in the Historical Monuments since 1980, include a 15th century tower with arches and eroded coats of arms of the Order of Malta.

Today, the Commandory is a museum highlighting its medieval and hospital history. The site preserves remarkable architectural elements, such as a Gothic fireplace, a dust window, and a calvary marking the location of the old cemetery. Recent excavations and research (especially by Virgile Reignier) shed light on its strategic role between Velay and Vivarais, as well as its social organization around barns and high justice.

The written sources, although lacunaries (fire of 1570), reveal a prosperous commandery, center of a mandate covering the present municipality of Devesset. Its decline began with the Wars of Religion (1565–85), where it alternated between Huguenot and Catholic hands. In the 18th century, it lost its status as a prior room to become a bailiage dependent on Lyon. The Hospitallers, then the Knights of Malta, kept their property until the Revolution.

The architecture reflects these transformations: the house body, made of stone and stone, has a long-paned roof and a semi-outwork tower with a conical roof. The walls, once flanked by towers (Saint Catherine, Saint Nicholas), have disappeared, but remains of the 15th century remain. Modern restoration has created openings and appentis, while preserving defensive elements such as archeries. The site, open to the public, offers a rare testimony of hospital orderries in Ardèche.

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