Anthony/Brady bm. "John Sappington Marmaduke (March 14, 1833 – December 28, 1887) was an American politician and soldier. He served as the 25th governor of Missouri from 1885 until his death in 1887. During the American Civil War, he was a senior officer of the Confederate States Army who commanded cavalry in the Trans-Mississippi Theater.On September 6, 1863 Marmaduke killed Confederate Brigadier-General Lucius M. Walker in a duel. Major-General Sterling Price ordered Marmaduke's arrest, but suspended the order because of the impending Union advance on Little Rock, Arkansas. Marmaduke never faced a court martial for the duel."