Following a string of acquisitions of small, boutique wineries, Jackson Family Wines has quietly purchased Field Stone Winery, in Sonoma County’s Alexander Valley.

Best known for its old-vine Petite Sirah, the Field Stone vineyard was first planted in 1894. Like many wineries and vineyards of that era, it fell into neglect during Prohibition. Wallace Johnson, a onetime mayor of Berkeley who was instrumental in establishing the BART system, revived the 27-acre property in the 1960s. When Johnson died from a stroke in 1979, his daughter and son-in-lawtook over winery operations.

Today, the winery is a well-regarded producer not only of Petite Sirah but also of Cabernet Sauvignon, Merlot, Viognier and Syrah. Its tasting room, on Highway 128 between Calistoga and Healdsburg, is a popular destination.

Jackson Family Wines, operated by founder Jess Jackson’s widow Barbara Banke, has not disclosed a purchase price. There’s no word yet on whether the Statens will remain involved, or whether any personnel changes can be expected.

We received the following statement from Jackson Family: “Field Stone Winery has a rich family history and a legacy of producing distinctive wines. These wines will continue to be offered predominantly at the winery and through DTC (direct-to-consumer) channels.”

We’ll continue to update this post as we learn more.

Field Stone Winery, 10075 Highway 128, Healdsburg. 1-800-544-7273. www.fieldstonewinery.com