Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Marquis de Morès was a famous duelist, frontier ranchman in the Badlands of Dakota Territory during the final years of the American Old West era, a railroad pioneer in Vietnam, and an anti-Semitic politician in his native France. Born Antoine-Amédée-Marie-Vincent Manca de Vallombrosa, he was later given the title Marquis de Morès et de Montemaggiore, but he was usually called Marquis de Morès. De Morès began life as a soldier, graduating in 1879 from St. Cyr, the leading military academy of France.