John Guerrero, winemaker, opens wine tasting room in Jacksonville's Elan Art GalleryWell-known and well-liked Jacksonville wine maker, John Guerrero, has opened a wine tasting room inside Élan Art Gallery at 245 W. Main Street. For now, you can taste John’s wines on Friday evenings and during the day on Saturday and Sunday. Since receiving his degree in Enology from UC Davis in 1985, Guerrero has served as the wine maker for Valley View Vineyard in Jacksonville. Since then, he’s produced award-winning reds and whites for Valley View along with his own JF Guerrero label, including the ever-popular Il Carino Roso red.