Trivia

His 1958 novel "Lady L" was said to have been inspired by his wife, Lesley Blanch. In it, a worldly grand dame works the social circuit, telling captivating stories along the way. Sophia Loren starred in the film made from the book, Lady L (1965).

He was the illegitimate son of a famous Russian actor of the silent era, Ivan Mosjoukine. His book, "Promise At Dawn", is an account of his childhood and early manhood, and of the influence of his lively Polish mother. It was the basis of a 1971 film directed by Jules Dassin, and three young actors played Gary at different ages - Didier Haudepin had the most screen time of the three.

After living in Poland, he became a French citizen in 1935. He later joined the French Foreign Service and became the French Consul in Los Angeles.

Member of the jury at the Cannes Film Festival in 1962

Member of the jury at the Berlin International Film Festival in 1979