Whig politician who was a United States Senator from Ohio from 1861 to 1877. He also served as President Rutherford B. Hayes' from 1877 to 1881.
He and his brother had their own practice in Ohio.
He wrote the Sherman Antitrust Act, the first legislation acting against monopolies in the U.S.
He married Cecilia Margaret Stewart, the daughter of an Ohio judge, in 1848.
He was elevated to the post of Secretary of State under President William McKinley.