Romain Gary (pronounced [ʁɔ.mɛ̃ ga.ʁi]; 21 May [O.S. 8 May] 1914 – 2 December 1980), born Roman Kacew (pronounced [katsɛf], and also known by the pen name Émile Ajar), was a French novelist, diplomat, film director, and World War II aviator. He is the only author to have won the Prix Goncourt twice (once under pseudonym). He is considered a major writer of French literature of the second half of the 20th century. He was married to Lesley Blanch, then Jean Seberg.
Source : Wikipedia