The Grand Sons The Grand Sons is a 2004 French comedy-drama film written and directed by Ilan Duran Cohen.The film won the Horizons competition at the 61st edition of the Venice Film Festival.Cast Reine Ferrato as Mamie Régine Guillaume Quatravaux as Guillaume Jean-Philippe Sêt as Maxime Brice Cauvin as Serge Samuel de Gunzburg as Ben Ilan Duran Cohen as Ben's father