Lyman Trumbull

Born in Colchester, Connecticut to a prominent political family, Trumbull studied law in Greenville, Georgia, before moving to Illinois to establish a practice and enter politics. He served as the Illinois Secretary of State from 1841 to 1843 and as a justice of the Illinois Supreme Court from 1848 to 1853. As an attorney, Trumbull successfully argued the case ''Jarrot v. Jarrot'', which ''de facto'' banned slavery in the state.
In 1855, Trumbull was elected to the Senate as the choice of the anti-slavery faction of the Illinois legislature, defeating Abraham Lincoln. Lincoln endorsed Trumbull for the election; the two soon became leading members of the new Republican Party. After the American Civil War, Trumbull was a leading moderate Republican, favoring both civil rights for freed slaves and reconciliation with the South.
In the 1868 impeachment trial of President Andrew Johnson, Trumbull voted to acquit Johnson despite heavy pressure from other Republican senators. He broke with the Republicans in 1870 and was a candidate for the presidency at the 1872 Liberal Republican convention. After returning to the Democratic Party, Trumbull left the Senate in 1873 to establish a legal practice in Chicago. Before his death in 1896, he became a member of the Populist Party and represented Eugene V. Debs before the Supreme Court of the United States. Provided by Wikipedia