Trefethen Family Vineyards is a winery in Napa Valley . It was established in 1968 . Part of the current company 's vineyards can be traced back to the winery Eshcol , a biblical word for “ lush cluster of grapes . ” The original Eschol winery was commissioned by James and George Goodman and constructed in 1886 by a Scottish sea captain named Hamden McIntyre . The original estate was 280 acres with 40 acres planted in vineyards . McIntyre designed it as a gravity-flow system : a horse-drawn winch brought grapes to the third floor of the three-story structure for crushing ; gravity carried the juice to the second floor for fermenting ; and , eventually , the wine descended to the first floor for aging . The vineyards survived Prohibition in the United States by producing grapes for the production of sacramental wine . However , by 1940 , the vineyards and winery building fell into disuse . The Eschol building suffered extensive structural damage from the 2014 South Napa earthquake . The winery building was restored from earthquake damage following over two years of repairs and improvements
2014 South Napa earthquake
2014 South Napa earthquake
Trefethen Vineyards