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Copperheads,in the American Civil War, a reproachful term for those Northerners sympathetic to the South, mostly Democrats outspoken in their opposition to the Lincoln administration. They were especially strong in Illinois, Indiana, and Ohio, where Clement L. VallandighamVallandigham, Clement Laird
, 1820–71, American political leader, leader of the Copperheads in the Civil War, b. New Lisbon (now Lisbon), Ohio. He became (1842) a lawyer, was elected to the Ohio legislature (1845, 1846), and was editor (1847–49) of the Dayton
..... Click the link for more information. was their leader. The Knights of the Golden CircleKnights of the Golden Circle,
secret order of Southern sympathizers in the North during the Civil War. Its members were known as Copperheads. Dr. George W. L. Bickley, a Virginian who had moved to Ohio, organized the first "castle," or local branch, in Cincinnati in 1854 and
..... Click the link for more information. was a Copperhead secret society. The term was often applied indiscriminately to all Democrats who opposed the administration. It afforded an opportunity for impugning the loyalty of those who opposed Lincoln's policies, either military or civil (e.g., the suspension of habeas corpus), and it was not until years after the Civil War that the Democratic party succeeded in living down the association.
See W. Gray, The Hidden Civil War (1942); F. L. Klement, The Copperheads in the Middle West (1960).
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