From Ohio History Central
The Piankashaw Indians were members of the Miami Indians, although they lived apart from the Miami nation. The United States referred to the Piankashaws as a separate tribe in the Treaty of Greeneville. The Piankashaws were a small group of Indians who lived in Illinois and Indiana after 1600. They were part of the Algonquian Indians. The Algonquian Indians consisted of various tribes that spoke similar languages. In the late 1700s and the early 1800s, the Piankashaw Indians and the Wea Indians worked closely together, oftentimes sharing the same villages. The Piankashaw Indians did not play a major role in Ohio during the 1700s and the 1800s, but they did sign numerous treaties. In these agreements, the Piankashaws forfeited all claims to the land in what is now Ohio.
- Hurt, R. Douglas. The Ohio Frontier: Crucible of the Old Northwest, 1720-1830. Bloomington, IN: Indiana University Press, 1996.