Grace Hafner, youngest of the four Hafner grandchildren, is Alexander Valley born. A 2013 graduate of Tufts University, she worked in San Francisco at Dropbox and Restoration Hardware. Now she is living in Bordeaux where she earned a Master of Business and Science in vineyard and winery management from Bordeaux Sciences Agro. She is currently working as the winemaker for Domaine de la Solitude in Martillac. Following the tradition of her grandmother and father, Grace is a budding chef who makes others happy with her cooking.