François César Le Tellier, Marquis of Courtanvaux, was the marquis of Courtanvaux, Count of Tonnerre, Duke of Doudeauville, and a French aristocrat, military officer, and scientist. Wikipedia
Born: February 18, 1718, Paris, France
Died: July 7, 1781 (age 63 years), Paris, France
Great-grandparents: François-Michel le Tellier, Marquis de Louvois, Anne de Souvré, Louise Boyer, and more