 The South Carolina Constitutional Convention of 1868, meeting during the first year of Congressional Reconstruction, changed the name district to county throughout the state.The Convention also established Oconee County out of the portion of Pickens District west of the Keowee and Seneca rivers plus a small area around the Fort Hill estate that formerly belonged to John C. Calhoun.This small area around the Calhoun property was transferred to Pickens County in the 1960s.