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(1807-1864), was a prominent supporter of the Free-Soil party in New York. In 1861 he was a delegate to the Peace Convention in Washington. He was volunteer aide to General McDowell at Bull Run in 1861. He was in command of a brigade before Washington, and was military governor of the District of Columbia in 1862. He commanded a division at Fredericksburg and at Gettysburg, where he lost over half his men. He was killed while leading his division at the Wilderness.