In 1803 William Henry Harrison was a special commissioner in charge of negotiating with the Native Americans on the issue of boundary of lands. He negotiated treaties that robbed Native Americans of millions of acres of land. Objecting to the treaties that permitted the whites to encroach on more Indian lands, a Shawnee intertribal leader named Tecumseh and his brother Tenskwatawa, also known as The Prophet, organized an Indian uprising. Harrison commanded a force that defeated the Indians at the Battle of Tippecanoe.