Concannon Vineyard
Concannon Vineyard is the second-largest winery in the Livermore Valley of California, producing around 30,000 cases annually. They are internationally known for their Petite Sirah, Concannon being the first winery to bottle this grape as a varietal wine in 1961. They also produce several other varieties of wine, including Chardonnay. Concannon is owned by The Wine Group.
It was founded in 1883 by James Concannon. The quality it achieved in sacramental and commercial wines helped establish Livermore Valley as one of America's select wine-growing districts. Grape cuttings from this vineyard were introduced to Mexico between 1889 and 1904 for the improvement of its commercial viticulture. As such, the vineyard has been designated a California Historical Landmark (#641).