Tecumseh's shared-land doctrine took hold at a council when he was fifteen
Tecumseh became famous for arguing that Native lands belonged to all tribes together, so none could be sold without everyone's consent. The idea was not originally his: he heard Mohawk leader Joseph Brant and others press it at a great intertribal conference in 1783, when he was fifteen.
The Shawnee leader was born in what is now Ohio, most probably on March 9, 1768, fifth of eight children, into the Panther clan of the Kispoko division. His name, rendered as I Cross the Way or Shooting Star, refers to a meteor tied to that clan, which is why his father and most of his siblings bore names drawn from the same celestial event. Later tales that a shooting star blazed at his birth grew from this. His father, the war chief Puckeshinwau, fell at the Battle of Point Pleasant in 1774, after which the Shawnees gave up Kentucky.
During the Revolutionary War his family was repeatedly uprooted, and George Rogers Clark burned Shawnee villages and crops in 1780 and again in 1782. Around eighteen, Tecumseh trained as a warrior under his elder brother Cheeseekau. Seeing captives mistreated gave him a lifelong aversion to torture, a trait later celebrated. He fought in Blue Jacket's resistance, which collapsed at Fallen Timbers in 1794; the Treaty of Greenville a year later surrendered most of Ohio.
His younger brother Tenskwatawa launched a religious revival in 1805 urging a return to traditional ways, and in 1808 the brothers founded Prophetstown in present-day Indiana, which swelled into a large multi-tribal settlement. The shared-ownership message alarmed American officials and accommodating chiefs alike. In 1811, while Tecumseh was recruiting in the South, William Henry Harrison defeated Tenskwatawa at Tippecanoe and razed the town.
Siding with Britain in the War of 1812, Tecumseh helped take Detroit that August. After American ships won control of Lake Erie in 1813, he reluctantly withdrew with the British into Upper Canada, and on October 5 he was killed at the Battle of the Thames facing troops under Richard Mentor Johnson. His confederacy fell apart, the lands he defended were ceded, and his reputation, blurred by legend, only grew in American, Canadian and Indigenous memory.
Source: Tecumseh