The Rockefeller family is an American industrial, political, and banking family that made one of the world's largest fortunes in the oil business during the late 19th and early 20th centuries, with John D. Rockefeller and his brother William Rockefeller primarily through Standard Oil. The family is also known for its long association with and control of Chase Manhattan Bank. They are considered to be one of the most powerful families, if not the most powerful family, in the history of the United States.