William Brown McKinley (September 5 1856 – December 7 1926) was a United States Representative from the State of Illinois. He was born near Petersburg Illinois.After graduating from the University of Illinois at Urbana-Champaign McKinley became a drug clerk in Springfield. He returned to Champaign to become a banker. In 1902 he was elected a trustee of the university. McKinley ran for U.S. House of Representatives in 1905 winning his first of four consecutive terms.