The Marquis de Mores cultivated a short-lived cattle empire during his time in Dakota Territory. But a long-running murder allegation also defined his time out west. De Mores wasn’t popular in the Badlands. He had enemies who despised him for everything from how he acquired his land, to his ambitious cattle operation, to his development of Medora—even xenophobia. After all, he was a French aristocrat – not from these parts. But when the Marquis fenced his land, that really lit the fuse.