Horatio Seymour was born in Onondaga County, New York. He served as mayor of Utica, New York from 1842 to 1843. He served as Governor of New York from 1853 to 1854 and again 1863 to 1864. As governor of New York in 1863 to 1864, he became a leading Northern opponent of President Abraham Lincoln's administration during the American Civil War. Northern opponents of Lincoln were known as Copperheads. Seymour protested Lincoln's restriction of civil liberties during the Civil War. He also opposed the Emancipation Proclamation and the Union's military draft. However, he did remain loyal to the Union.