John Rockefeller IV, the heir to the famous American dynasty, the great-grandson of the oil tycoon John Rockefeller died at the age of 89 at his home in Washington, the Washington Post reports. Rockefeller IV served as governor of West Virginia and later represented the state in the US Senate for 30 years. He has worked on health, social policy and national security issues.

John Rockefeller IV, the heir to the famous American dynasty, the great-grandson of the oil tycoon John Rockefeller died at the age of 89 at his home in Washington, the Washington Post reports. Rockefeller IV served as governor of West Virginia and later represented the state in the US Senate for 30 years. He has worked on health, social policy and national security issues.