Since 1927, when John Pedroncelli, SR. purchased vineyard and a small winery in Sonoma country's dry creek valley, two elements remain unchanged: the exceptional family's vineyards and the family's dedication to making fine wine. In 1963 when John Jr. and Jim officially purchased the winery from their father, they grew the line of wine in the 1960s with vineyard expansion and diversification. The third generation came on board the vineyard in the 1990s to the 21st century. Today, the fourth generation is coming up the ranks... and it is still a family owned business.

Sonoma County is the southwestern county and largest producer of California's Wine, which also includes Napa, Mendocino and Lake counties. It has 13 approved American Viticultural Areas and over 250 wineries. In 2002, Sonoma County ranked as the 32nd county in the United States in agricultural production. As early as 1920, Sonoma County was ranked as the eighth most agriculturally productive US county and a leading producer of hops, grapes, prunes, apples, and dairy and poultry products, largely due to the extent of available, fertile agricultural land in addition to the abundance of high quality irrigation water.