Since 1904. A Sonoma tradition. Sebastiani Vineyards and Winery has been producing wines in Sonoma County since 1904. Our Sonoma County wines are blends sourced from the great growing sites through the county. We hope our wines add a touch of Sonoma County to any gathering for family and friends. - Mark Lyon, Winemaker. Sebastiani.com. Alc. 13.5% by vol. Produced & bottled by Sebastiani Vineyards & Winery, Sonoma, CA.