John D. Rockefeller III was the older brother of which chief executive of Chase Manhattan Corporation?
John D. Rockefeller III:  He was the eldest son of philanthropists John D. Rockefeller Jr. and Abby Aldrich Rockefeller. David Rockefeller: David Rockefeller (June 12, 1915 – March 20, 2017) was an American banker who was chairman and chief executive of Chase Manhattan Corporation. David Rockefeller:  Rockefeller was a son of John D. Rockefeller Jr. and Abby Aldrich Rockefeller, and a grandson of John D. Rockefeller and Laura Spelman Rockefeller.
David Rockefeller