O’Shaughnessy Estate Winery was founded in 1990 by Betty O’Shaughnessy Woolls, a former Minneapolis real estate developer. She and her husband Paul Woolls remain the owners and operators of the St. Helena winery, which owns 100 acres on Howell Mountain and also has vineyards in Mount Veeder. Sean Capiaux is president and winemaker. The estate makes Cabernet Sauvignon, Merlot, Syrah, Chardonnay and Sauvignon Blanc. Wine Advocate has often rated the estate’s Cabs in the mid-90s. Antonio Galloni of Wine Advocate rated the 2009 Mt. Veeder Cab at 95 pts and called it “impeccable from start to finish.”