Rose of the Cimarron was the beautiful Rose Dunn, who was infatuated with outlaw George "Bittercreek" Newcomb as a teenager in the 1890's. She assisted him and his gang with nursing, shelter and supplies but was the unwitting instrument of his death. Her brothers, knowing that he would visit her at their house lay in wait and killed him for the "dead or alive" reward. She later married a local politician & lived a respectable life until her death. The lyrics seem to cover the stakeout.