The winery is located in the municipality of Preignac in the Sauternes area (Graves, Bordeaux). The famous Château d'Yquem lies to the south. The estate also includes 200 hectares of forest. Its origins date back to 1592, when Léonard de Suduiraut's wife brought vineyard property into the marriage. The château was built by the Suduiraut family between 1665 and 1675 and a picturesque park was laid out. Subsequently, there were numerous owners. One of them was Nicolas Edme Guillot, who considerably expanded the estate in 1831 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. It was classified as a Premier Grand Cru Classé (Sauternes) in the 1855 Bordeaux Classification. The vineyards cover 90 hectares of Sémillon (90%) and Sauvignon Blanc (10%). The extremely long-lasting, noble sweet wine is matured for 18 to 24 months in barriques, one third of which are new. It is also known as the "d'Yquem of the little man". The second wine is called "Castelnau de Suduiraut".
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