Château de Grandvoir

The château de Grandvoir in Neufchâteau, Belgium, began as a settlement that likely dates back to Roman times, when it stood as a large villa on the course of the river Voir. Its built fabric and layout reflect a long sequence of occupation, with a medieval phase in which the site functioned as a fortified house and substantial rebuilding during the 17th and 18th centuries. Over several centuries Grandvoir combined residential prestige with local industry, and it attracted visits from distinguished people in the region.

In the medieval period the complex took on a defensive character, arranged to enclose a central courtyard and protected by a water-filled ditch. A diversion of the Vierre stream runs to within a few metres of the château and would have been able to feed that ditch. The layout near the main gate indicates a tradition of gate control and a secondary line of defence provided by a portcullis.

From the 17th century the estate became tightly linked to ironworking. In 1668 François de Valfleury obtained permission to establish forges at Grandvoir, and his family were resident by 1671. In August 1683 the widow of Valfleury let the forges and the château to Jean‑Mathieu de Marchant for a nine-year term. Structural elements that survive, including an inscribed date on a library chimney, show that parts of the living quarters predate the 1600s.

The 18th century saw major expansion under the de Jacques family, who rebuilt several blocks of the quadrilateral complex and added dependencies for the industrial activity. A house facing the entrance gate was erected in 1720 by Lambert de Jacques, and Lambert de Jacques II received ennobling letters in 1727. Under Lambert‑Joseph de Jacques the forges reached their height: the Vierre’s flow was improved to serve the factories, the estate grew through purchase of woodlands to form a forest of over 140 hectares, and contemporary paintings by Abraham Gilson of Orval were recorded in the château.

The industrial enterprise declined in the late 18th century. By 1779 Lambert de Jacques had taken on debt, and heirs sold the château and its appurtenances to Mathias Petit on 12 May 1791; the forges thereafter came to an end. Mathias Petit, an engineer in imperial service, died at Grandvoir on 6 November 1808. The property changed hands in 1813 when Jean‑Herman Collard acquired it; he was assaulted and killed on the evening of 3 December 1814 at a place called Le Blanc Caillou, and his widow and daughters were subsequently taken in by Pierre‑Joseph Collard.

The Collard de Belloys family occupied Grandvoir for nearly a century. Elisabeth Collard completed the family crypt beneath the estate chapel and died on 5 January 1896. Ferdinand Bretagne later inherited the property and carried out thorough searches of cellars, basements, attics and walls, then announced a public sale of much of the movable and immovable property, including a substantial library. Around 1920 the château returned to the Petit family through Georges Petit, a great-grandson of Mathias Petit. In the recent period the building has been used as a hotel and hunting relais, and since September 2016 one wing has housed a brewery, the Brasserie de Grandvoir, which produces the top-fermented beer Le Vaurien (5.7% ABV).