What is de jouvenel?

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Jouvenel - Life
... He was the son of Henri de Jouvenel and Sarah Boas, the daughter of a Jewish industrialist ... From 1930 to 1934, De Jouvenel had an affair with the American war correspondent Martha Gellhorn ... In his memoirs, The Invisible Writing, Arthur Koestler recalled that in 1934, Jouvenel was among a small number of French intellectuals who promised moral and financial support to the newly-established Institut pour l ...