Born: May 26, 1769, Neuilly-sur-Seine, France
Died: December 25, 1844 (age 75 years), Munich, Germany
Grandchildren: Charles de Biencourt, Nathalie de Biencourt, Léon de Biencourt, and more
Partner: Marie Henriette de Becdelièvre
Parents: Anne Léon II de Montmorency-Fosseux