The Wea Tribe was a subtribe of the Miami Nation. In the late seventeenth century they lived near the western shore of Lake Michigan. During the next 150 years, they moved frequently and the 1750ís found them living on the Wabash and White Rivers, in the present States of Indiana and Illinois. The Weas supported the British during the Revolutionary War. The tribe was also involved in the unrest of the 1790ís in the northwest, which culminated with the Indiansí defeat at the Battle of Fallen Timbers in 1794. Two Wea Chiefs signed the subsequent Treaty at Greenville.
Some of the Weas joined the confederation headed by two Shawnee brothers, Tecumseh and the Prophet, in the first and second decades of the nineteenth century. Other members of the tribe, in an attempt to disassociate themselves from this movement, removed west of the Mississippi to an area south of St. Louis. Here they maintained their close relationship with bands of the Piankashaws and Peoria, some of whom had earlier removed to this area.
On October 2, 1818, at St. Maryís, Ohio, the Weas ceded most of their lands in Indiana, Illinois and Ohio, except for a reserve in Indiana, on the Wabash River. The remaining Indiana Reserve was ceded by the Treaty of August 16, 1820, 7 State. 209. Having disposed of all their lands, the remaining Wea removed to Missouri and Arkansas where they joined the other tribal members and the Piankashaws who had also left Indiana and Illinois. By the Treaty of October 29, 1832, 7 Stat. 410, the Wea, jointly with the Piankashaws, were granted 250 sections of land in what is now Miami County, Kansas, on lands adjacent to the Peoria and Kaskaskia Reserve.