In 1971, businessman Joe Martin and his wife, Emma, purchased a 100-acre vineyard known Behler Ranch in the Sonoma Valley town of Kenwood. The fruit from this vineyard was sold to area wineries until 1979 when a winery was built to produce estate-bottled wine. St. Francis Winery was named after St. Francis of Assisi, patron saint of animals and protector of the natural world. St. Francis Winery was beginning to bottle its own wine, there were only a handful of wineries in Sonoma and the region was searching for an identity. Tom Mackey in 1983 was the beginning of important growth at St. Francis and in Sonoma, as he and St. Francis helped to pioneer a Sonoma Valley style and pinpoint the varieties that were ideally suited to Sonoma soils