 Lieutenant Shepard was lost along with all but one crew member when their ship, HMS "Polyanthus", was sunk by the German submarine "U-952" in the mid-Atlantic on 21 September 1943.He was survived by his wife, Ann Faith Shepard, and his young daughter, Minette.Shepard's younger sister, Mary Shepard, also became an illustrator, and is best known for her illustrations of P. L. Travers' "Mary Poppins".