Marguerite Yourcenar (born Marguerite Antoinette Jeanne Marie Ghislaine Cleenewerck de Crayencour; 8 June 1903 – 17 December 1987) was a Belgian-born French novelist and essayist, who became a US citizen in 1947. Winner of the Prix Femina and the Erasmus Prize, she was the first woman elected to the Académie Française, in 1980.