The winery is located in the municipality of Preignac in the Sauternes
area (Graves, Bordeaux). To the south is the famous Château d'Yquem
. The property also includes 200 hectares of forest. Its origins date back to 1592, when Léonard de Suduiraut married Léonard de Suduiraut and his wife brought vineyard property into the marriage. The château was built by the Suduiraut family between 1665 and 1675 and a picturesque park was created. Subsequently, there were numerous owners. One of them was Nicolas Edme Guillot, who in 1831 considerably expanded the property by purchasing the neighbouring Château Castelnau. The name of the second wine is based on this. Since 1992, the estate has been owned by the AXA
insurance group. It is managed by Christian Seely. In the 1855 Bordeaux classification
it was classified as "Premier Cru Classé" (Sauternes). The vineyards cover 90 hectares with Sémillon (90%) and Sauvignon Blanc (10%). The extremely long-lasting noble sweet wine is aged for 18 to 24 months in barriques that are one third new. It is also known as "d'Yquem of the little man". The second wine is called "Castelnau de Suduiraut".