Souverain’s history dates to 1944 when J. Leland Stewart harvested his first crop from his vineyard near Howell Mountain. Stewart focused on making Cabernet Sauvignon, and for several decades his Cabs were widely admired by those who believed that California could produce world class wine. Stewart sold the winery to investors in 1973, staying on for almost a decade as winemaking consultant. At the time of the sale, the estate moved to Alexander Valley, where it remains today. In 1986 the estate was sold to Beringer and the word “Chateau” was added to the name. Ed Killian was hired as an associate winemaker in 1992 and since 1996 he has been head winemaker. Souverain owns a 120-year old estate vineyard of about 280 acres. Souverain produces Sauvignon Blanc, Merlot, and Cabernet Sauvignon.