Monsieur Sinfray, ( 1747–1757) or Monsieur de St. Frais, was a French artillery officer in the Battle of Plassey (1757), who fought for Siraj Ud Daulah, Nawab of Bengal. He was also the secretary to the Council at Chandernagore.[1] Earlier, he succeeded D.E. Choisis as Chef de Yanaon in 1747.