Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, the Most Powerful Indian Tribe in American History Who is the protagonist in Empire of the Summer Moon: Quanah Parker and the Rise and Fall of the Comanches, the Most Powerful Indian Tribe in American History by S. C. Gwynne? Asked by bookragstutor on 20 Aug 05:03 Last updated by Jill W on 19 Dec 12:14