Winemaking has been part of the Coppola family for several generations. In fact Francis Coppola’s grandfather, Agostino used to make wine in his New York basement in concrete fermenters he built himself. According to Uncle Mikey, they weren’t fancy wines, just everyday drinking wines.
CrazyAboutWine recommends contacting Niebaum-Coppola/Diamond Collection at http://www.ffcpresents.com or calling (707)251-3200 to verify the winery's location.