St. Francis is a winery located in Sonoma County, California, with a brand identity deeply rooted in its heritage and a commitment to crafting high-quality wines that are an authentic expression of their terroir. The winery was founded in 1971 by Joe Martin and his wife, a retired San Francisco physician.

The brand's philosophy is centered on a "hands-on" approach to viticulture and winemaking. St. Francis has a long history of being a pioneer in the Sonoma Valley, being one of the first wineries to plant and produce high-quality Merlot and Zinfandel in the region. Their commitment to these varietals is a core part of their identity.

The St. Francis brand is also known for its strong focus on sustainability. They were one of the first wineries in Sonoma County to become certified as a sustainable winery and vineyard, a testament to their dedication to environmental stewardship.

In addition to its well-regarded Merlot and Zinfandel, the brand's portfolio includes other varietals such as Cabernet Sauvignon and Chardonnay. Over the years, St. Francis has built a reputation for producing wines that are both food-friendly and approachable, making them a popular choice for both everyday enjoyment and special occasions. The winery is also celebrated for its hospitality, offering a world-class tasting room experience that includes a well-known food and wine pairing program.