Licencie-es-lettres, Sorbonne, 1939.
Joined Wildenstein and Company Inc., New York 1940, Vice-President 1943-1959, President 1959-1968, Chairman since 1968. President Wildenstein Foundation Inc., New York since 1964. Director Wildenstein and Company Ltd., London, and Wildenstein Arte, Buenos Aires since 1963.
Founder and; Director of Activities, Musee Jacquemart-Andre, and of Musee Chaalis (Institut de France), Paris, 62. Director Gazette des Beaux-Arts since 1963. Commander des Arts et des Lettres, Commander de l’ordre de Leopold II (Belgium).
American Institute of France, New York since 1947. French Chamber of Commerce in United States. Institute de France (Academie des Beaux-Arts), Commander des Arts et des Lettres, Commander de l’ordre de Leopold II (Belgium).
Married Martine Kapferer, 1939 (divorced 1968). Children: Alec, Guy; married Sylvia Roth, 1978.