Gundlach Bundshu is one of the half dozen California wineries that claim to be the oldest. This claim depends on the metrics you choose. GunBun's claim in short: For 160 years and six generations the Bundshu family has continuously owned and operated their commercial winery making them the only such winery to do so. A sticking point: They turned to cattle for forty years beginning with Prohibition before returning to winemaking full-time in 1970.
Jacob Gundlach and Charles Bundshuh were both German immigrants who formed their wine company in 1868. Gundlach had purchased 400 acres and planted his Rhinefarm Vineyards ten years earlier. Bundschu was a businessman who married into the family and would go on to be instrumental in the company's rise into an international fortified wine powerhouse. That stature would unfortunately be shortlived. Aside from the vineyards, the business was entirely located in San Francisco and the 1906 earthquake destroyed them.
Situated 35 miles north of San Francisco and just barely within the Sonoma Coast wine appellation, the 320 acre Gundlach Bundshu vineyards lie very close to Napa and Carneros. They include both valley floor plantings and Mayacamas foothill vineyards. The mineral rich, marine sediment vineyards in the valley are planted in Pinot Noir, Gewurztraminer and Chardonnay. The shallow rocky volanic foothills are planted in the Bordeaux varietals along with Zinfandel and Syrah.
And this is where this post ends because gunbun.com says it so much better than we can. It is the best winery website we have ever seen. Check it out for whatever else you might want to know about the operation.