Clementine Quereux: Today's Notable Young Entrepreneur By Notable Life By Notable LifeView Author|June 5, 2015|Young EntrepreneursView Young Entrepreneurs Clementine Quereux is the Export Manager and a global brand ambassador for Barton & Guestier Wines. The 28-year-old native of La Lande-de-Fronsac (France) grew up with a vie de vin from an early age, and studied in Bordeaux, Nantes, and Toulouse... View this article.