In 1854, the Illinois merged with the Wea and Piankashaw nations, renaming themselves as the Confederated Peoria Tribe. In 1867, they resettled in a new reservation in Northeast Oklahoma and were eventually joined by members of the Miami Tribe, who became an official part of their new confederation in 1873. Lasting about 50 years, the United Peoria and Miami Tribe dissolved in the 1920s. The remaining members of the Peoria Confederation reorganized, seeking federal recognition by the U.S. government, and were officially acknowledged by 1978. The remaining descendants of the Illinois Confederation are today found within the Peoria in Ottawa County, Oklahoma.