For forty years, the Trefethen Family Vineyard has been producing estate grown wine. Since day one until the present, they have never out sourced a single grape for any of the wines they’ve produced. Family owned and operated, Trefethen Family Vineyards is one of the few family estate wineries that still exist. The estate is located in the cooler, southern end of the Oak Knoll District in Napa Valley.

Today the Trefethen family farms 63 vineyard blocks that consist of nine grape varieties, Chardonnay, Cabernet Sauvignon, Merlot, Pinot Noir, Riesling, Cabernet Franc, Malbec, Petit Verdot, and Viognier.