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Born in 1823, was prior to the war a lawyer, Democratic member of the New York Legislature, Secretary of Legation at London, and Congressman from 1857 to 1861. He had command of a brigade in the Peninsula campaign and at Antietam, a division at Fredericksburg, and a corps at Chancellorsville and at Gettysburg, where his services were conspicuous. After the war he was sent abroad on a mission, and retired from the army with the rank of major-general in 1869. From 1869 to 1873 he was U.S. Minister to Spain. In 1893 he re-entered the House of Representatives as a Democrat from New York City.