March 8-9, 1782: Pennsylvania militia attack Moravian church in Gnadenhutten, OH, killing 28 Delaware Indians in pairs after holding them captive the night of the 8th. Only two survived.
"Following the American victory in the Revolution, the Delawares struggled against whites as they moved onto the natives' territory. In 1794, General Anthony Wayne defeated the Delawares and other Ohio Indians at the Battle of Fallen Timbers. The natives surrendered most of their Ohio lands with the signing of the Treaty of Greeneville in 1795.
In 1829, the United States forced the Delawares to relinquish their remaining land in Ohio and move west of the Mississippi River." (http://www.ohiohistorycentral.org/entry.php?rec=584)