Lt. Comdr. Thomas W. Marshall, Jr., born 22 December 1906 in the District of Columbia, graduated from the U.S. Naval Academy and was commissioned ensign 5 June 1930. Prior to 1939 he served in Nevada, Marblehead, Houston, John D. Ford and S-42.

On 15 June 1939 he joined Jacob Jones as executive officer. Lt. Comdr. Marshall was killed when Jacob Jones was sunk by enemy torpedo off Cape May, N.J., 28 February 1942.