On August 3, 1829, members of the Shawnee Indians and the Seneca Indians signed the Treaty of Lewistown with the United States. In this treaty, Senecas and Shawnees living at Lewistown, Ohio, relinquished their claim to the land and joined the rest of the Ohio Senecas already living on a reservation west of the Mississippi River.
The United States government granted this group of about three hundred Indians 60,000 acres (240 km2) of land in the west and a six thousand dollar advance on the sale of their Ohio lands. In addition, the United States presented the natives with blankets, plows, axes, hoes, rifles, and other supplies.
On July 20, 1831, James B. Gardiner, acting on behalf of U.S. President Andrew Jackson, signed the treaty which stipulated, in part:
The Seneca and Shawnee Indians, residing at and around Lewistown in the State of Ohio, in consideration of the stipulations herein made on the part of the United States, do for ever cede, release and quit claim to the United States, the lands granted to them by patent in fee simple by the sixth article of the treaty made at the foot of the rapids of the Miami river of Lake Erie, on the twenty-ninth day of September, in the year 1817 (September 29, 1817), containing forty-eight square miles, and described in said treaty as follows:
And the said Senecas and Shawnees also cede to the United States, in manner aforesaid, one other tract of land, reserved for them by the second article of the treaty made at St. Mary's, in Ohio, on the seventeenth of September, in the year 1818 (September 17, 1818), which tract is described in said treaty as follows: