Following population increase in the area, Marshall County was created by the Kentucky legislature in 1842 from the northern half of Calloway County. The first European-American settlers had arrived in about 1818, shortly after the area was bought from the Chickasaw Indians as part of the Jackson Purchase by Gen. Andrew Jackson and Kentucky Gov. Isaac Shelby. The Chickasaw were forced under Indian Removal to move to what became known as Indian Territory, new and much less fertile lands west of the Mississippi River.