"' Camille du Gast "'( "'Marie Marthe Camille Desinge du Gast "', "'Camille Crespin du Gast "', 30 May 1868 24 April 1942 ) was one of a trio of pioneering French female celebrities of the " Belle Epoque ", together with H�l�ne de Rothschild ( Baroness H�l�ne van Zuylen ) and Anne de Rochechouart de Mortemart the ( Duchess of Uz�s ) . du Gast was known as " one of the richest and most accomplished widows in France, " and as an accomplished sportswoman a balloonist, parachute jumper, fencer, tobogganist, skier, rifle and pistol shot, horse trainer as well as a concert pianist and singer.