Sullivan County, Tennessee: History
Sullivan County was created in 1779 from a portion of Washington County, and named for John Sullivan, a Patriot general in the Revolutionary War. Long Island of the Holston in Kingsport was long an important center for the Cherokee, who occupied much of this territory. Later in 1761 the British colonists built Fort Robinson on Long Island, following the fall of Fort Loudoun further to the south. This attracted other settlers, and the Sullivan area became one of the earliest areas of Tennessee to be settled by European Americans.
As political tensions rose prior to the American Civil War, Sullivan County was one of the few East Tennessee counties to support secession. It became known as the Little Confederacy. In Tennessee's June 1861 referendum, the county voted 1,586 to 627 in favor of secession.