The presence of the Dupuy family in the village of Puisseguin Bordeaux dates back to the Middle Ages. In 1934 Marceau Dupuy, a doctor and politician known in the region, acquired ownership of the Château Beauséjour. In 1945, when his son Alain returns from war, he starts managing the family estate. Alain applies the teachings of his grandfather, Mr. Berthon, then owner of the castle Langlais. Spread across 4 estates, the Dupuy vineyards occupy a total area of forty-eight hectares.

The elimination of chemical treatments in the winemaking process began in 1947 when Alain Dupuy started winemaking and developed an operation based on respect for nature. The floors are herbicide and insecticide free, which is reflected by the presence of wild tulips in the vineyards every spring. Since 1995, his son Gerard, a graduate of wine, took over the management and perpetuates sustainable farming traditions. In 1996, he obtained the Ecocert organic certification.

Located in the heart of the village of Puisseguin, the vines of Château Beauséjour occupy eighty hectares on the famous clay-limestone plateau of Saint-Emilion. The vineyard is filled with the most preferred varieties of the region, mainly Merlot, Cabernet Franc and a little Cabernet Sauvignon. The average age of the vines is forty. In the center, stands the building known as Chartreuse that dates from the nineteenth century. The walls of hewn stones allow the winery to offer the optimal conditions for the breeding of an excellent wine. The ambient temperature of thirteen degrees Celsius is constant.

I the town of Puisseguin, Château Langlais is located east of Château Beauséjour. The vineyards occupy an area of twelve acres on the famous clay-limestone plateau of Saint-Emilion but also on Castillon. The vineyard is filled with the most preferred varieties of the region, mainly Merlot, Cabernet Franc and a little Cabernet Sauvignon. The average age of the vines is thirty-five years. Winemaking is provided by indigenous yeasts adapted to the environment for centuries. The wine is then aged in the cellar of the castle to aging for one to two years depending on the vintage before bottling, which takes place at the property.

Since 2010, the line-up of wines of Gérard Dupuy has been complemented by the Clos du Moulin vineyard in Saint Martin de Gurçon, under the Bergerac appellation. The vineyard occupy an area of twelve hectares over a clay and limestone soil. The vineyard is filled with the most preferred varieties of the region, mainly Merlot, Cabernet Sauvignon, Semillon, Sauvignon and Muscadelle.