From Wikipedia, the free encyclopedia. John Justin (24 November 1917 - 29 November 2002) was a British stage and film actor. John Justinian de Ledesma was born in London, England, the son of a well-off Argentine rancher. Though he grew up on his fathers ranch, he was educated at Bryanston School, Dorset. He developed an interest in flying and became a qualified pilot at the age of 12, though he was not allowed to fly solo at the time because of his age. The acting bug bit him early. By the age of 16, he had joined the Plymouth Repertory. In 1937, he briefly trained with the Royal Academy of Dramatic Art, but did not like it and soon joined the repertory company of John Gielgud. In 1938, he auditioned for and won the role for which he is perhaps best remembered, Ahmad in the 1940 version of The Thief of Bagdad, opposite Sabu. World War II broke out during the films production. After completing the picture, Justin joined the Royal Air Force, serving as a test pilot and flying instructor. He also worked on two films, The Gentle Sex (1943) with Leslie Howard, and Journey Together (1944) with Edward G.