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His family said the cause of death was complications from Inclusion Body Myositis.
Warner was born Feb. 13, 1921 in Chicago and grew up first in Evanston and then in Winnetka, both suburbs of Chicago. His parents were Rawleigh Warner and Dorothy Haskins Warner.
He first attended Lake Forest Academy, then Lawrenceville School in New Jersey and finally Princeton. After his graduation from Princeton University in 1943, Warner entered the Army and served in the Field Artillery with the 10th Mountain Division in Italy. He was awarded the Silver Star, the Bronze Star and the Purple Heart, eventually leaving the Army as Captain in 1946.
Before joining Mobil, Warner worked for CONOCO for five years. He joined Socony Vacuum Company, which later became Mobil Oil Corporation, in the Treasurer's Office in 1953. On Jan. 1, 1965 he was elected President of Mobil Oil Corporation and in 1969, became Chairman and CEO. He retired in 1986.
Warner was a term trustee of Princeton University from 1968 to 1972. He received an Honorary Degree in 1984. From 1981 to 1986 he was Chairman of the Corporation and Foundation Sections of the $53 million campaign and a member of the Resources Committee from 1981 to 1996 for Princeton. He was also a Trustee of Barnard College, Lawrenceville School and the Woodrow Wilson International Center for Scholars. He also received Honorary Degrees from Marietta College in Ohio and Pace University. He served on the Business Roundtable, was chairman of the American Petroleum Institute from which he received their Gold Medal Award, was General Campaign Chairman of the United Fund of Greater New York, member (by Presidential appointment) of the President's Committee for the Arts and served as a Director of American Express, American Telephone and Telegraph, Bristol-Myers Squibb Company, Caterpillar Inc., Chemical Bank, Honeywell, Inc. and Time, Inc. As one of the original Trustees of the Kennedy Center he helped create what is now known as the Kennedy Center.
Warner is survived by his wife, Mary Ann deClairmont Warner, of 66 years, two daughters: Alison (Mrs. Percy R. Pyne, IV), Suzanne (Mrs. Robert W. Parsons), four grandchildren; four great grandsons; two sisters: Dorothy Sills of Wilmette, Illinois and Suzanne Kenly of Winnetka, Illinois. He was predeceased by his older sister, Mary Clifford.
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