Thomas Corwin, also known as Tom Corwin, The Wagon Boy, and Black Tom was a politician from the state of Ohio. He represented Ohio in both houses of Congress and served as the 15th governor of Ohio and the 20th Secretary of the Treasury. After affiliating with the Whig Party, he joined the Republican Party in the 1850s. Corwin is best known for his sponsorship of the proposed Corwin Amendment, which was presented in an unsuccessful attempt to avoid the oncoming American Civil War.