Sickles, Daniel (Edgar) (1825–1914)

US soldier and representative. Sickles was a brigadier general during the Civil War, leading several campaigns and battles, and he was awarded the Congressional Medal of Honor. After the war he became military governor of the Carolinas until, in 1869, he was appointed ambassador to Spain. On his return to the USA, was chairman of the New York State Monuments Commission 1886–1912; but was relieved of this post for mishandling funds.

In 1859, during his first term in Washington, Sickles killed Barton Key in a duel. He was acquitted in a trial after being the first American defendant to plead temporary insanity.