The "Chevalier d'Eon," a noted French diplomatist, born at Tonnerre, Burgundy; notorious as having, while on secret missions, adopted a woman's dress for purposes of disguise; was ambassador at the English Court, but degraded and recalled by Louis XVI., and condemned to wear feminine garb till the close of his life; died in destitution, when the popular doubt as to his real sex was set at rest (1728-1810).