Zialena Winery has roots in Alexander Valley dating back to the early 1900s when Giuseppe Mazzoni immigrated from Italy and became a grape farmer and winemaker. His sons, Fred and Jim, carried on the tradition and produced wine in the “Dr. Pierce’s” barn in Asti just north of Geyserville. As the winemaking operation closed in the 1970s, Jim’s youngest son, Mike, expanded the grape growing business which he continues to operate today as Mazzoni Vineyards. Mike’s children, Mark and Lisa, have teamed up to carry the family legacy into the fourth generation and bring back the winemaking tradition under the Zialena label.