Aosta, Emmanuel Philibert of Savoy, duke of, 1869-1931, Italian general; son of King Amadeus of Spain and cousin of Victor Emmanuel III of Italy. In World War I he held the Piave front after the Italian defeat at Caporetto and later occupied Friuli. He became a marshal in 1926. His son Amadeus (1898-1942), who succeeded to his title, was viceroy of Ethiopia (1937-41). He surrendered to the British during World War II after a valiant defense.