History Of The City Shelbyville and Shelby County are a part of a huge territory, known as the "New Purchase", which the Delaware and other tribes of Indians ceded by treaty to the United States, October 3, 1818, at St. Mary's, Ohio. The area was not opened for settlement until 1820, the Indians having agreed to vacate the ceded lands by that date. In 1820 the "New Purchase" was formally opened...