Charles François Philibert Masson (1762 in Blamont — 1807 in Coblenz) was a Frenchman who is notable for the books that he published. His Secret Memoirs of the Court of St Petersburg described the court of Catherine the Great and Paul I of Russia. They are still in print. Charles François Philibert Masson was a member of the Institut de France He became private secretary to grandduke Alexander of Russia, the man who became Tsar Alexander I in 1805. He lived in Germany for a while before returning to France where he published his Mémoires secrets sur la Russie.