 His younger brother, Arthur Hugh Bunker (July 29, 1895 – May 19, 1964), was also a noted businessman, chairman of the executive committee of the War Production Board (1941–1945) during World War II, and president and then board chairman of American Metal Climax (AMAX).Ellsworth Bunker studied to be a lawyer, and graduated from Yale University with the class of 1916.During World War II he served as chairman of the War Production Board's cane sugar advisory committee.