This superb property possesses 16 hectares of vines (60% Merlot and 40% Cabernet Franc) and was purchased in 1978 by Comte Léo de Malet Roquefort, the owner of Château La Gaffelière. In June 2011 it was acquired by the Clarence Dillon group, which also owns Haut-Brion and La Mission Haut-Brion. Its new owner decided to rename the property, starting with the 2011 vintage. Château Tertre Daugay, the fifth cru classé to be acquired by the Clarence Dillon group, became Château Quintus.The property is located on a high promontory that forms the edge of the Saint Emilion plateau. It commands a panoramic view far into the distance of the surrounding villages and the Dordogne Valley. It is here that, since time immemorial, a watchtower has stood to guard the village of Saint Emilion. The exceptional microclimate is due to the area's diversity in terms of soil, slopes and orientation. Consequently, it comes as no surprise that in 1844 and 1848 the wine was among the 14 most sought-after and expensive in Saint Emilion. For nearly a century, Bordeaux et ses Vins, the standard reference work produced by Cocks and Féret, listed the property as a Saint Emilion Premier Cru. The property was also one of the prestigious vineyards in Saint Emilion to win a gold medal at the Paris Universal Exhibition of 1867.