Shenandoah Vineyards in Plymouth, CA, was founded in 1977 by Shirley and Leon Sobon. They moved from Los Altos, California, where Leon was a Senior Scientist with the Lockheed Research Lab. Leon’s gift for home winemaking led him to leave Lockheed and begin a new career as a Winemaker. The selection of a winery site in the Shenandoah Valley of Amador County was well researched. Leon and Shirley and their six children moved to the old Steiner Ranch, outside Plymouth, CA, planted a vineyard, and converted the old stone garage to the Shenandoah Vineyards winery.
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The Sobon Estate winery started in 1989 when Leon and Shirley Sobon bought each other a second winery for their 30th wedding anniversary present. They purchased the historic D’Agostini Winery, one of the oldest in the state. This winery has been designated as California State Historic Landmark #762.