Juslyn Vineyards is a boutique winery situated in the prestigious Spring Mountain District of Napa Valley. Founded in 1997 by British expatriates Perry and Carolyn Butler, the winery specializes in small-lot, estate-grown wines, primarily Cabernet Sauvignon blends. The name "Juslyn" is a portmanteau derived from their daughter Justine and Carolyn's name, symbolizing their family-oriented approach to winemaking .