In the early 1800s, when control of the Old Northwest had not yet been assured to the United States, the Shawnee leaders Tecumseh and his brother Tenskwatawa, the Shawnee Prophet, led an intertribal movement culminating at the Battle of Tippecanoe and the Battle of the Thames. Historians have portrayed Tecumseh, the war leader, as the key figure in forging the intertribal confederacy. In this full-length biography of Tenskwatawa, R. David Edmunds shows that, to the contrary, the Shawnee Prophet initiated and for much of the period dominated the movement, providing a set of religious beliefs and ceremonies that revived the tribes' fading power and cohesion.