The Rockefeller family ( ROCK-ə-fell-ər) is an American industrial, political, and banking family that owns one of the world's largest fortunes. The fortune was made in the American petroleum industry during the late 19th and early 20th centuries by brothers John D. Rockefeller and William A. Rockefeller Jr., primarily through Standard Oil (the predecessor of ExxonMobil and Chevron Corporation). The family had a long association with, and control of, Chase Manhattan Bank. By 1987, the Rockefelle…