The current dean of the Tennessee delegation is Senator Marsha Blackburn, having served in Congress continuously since 2003.
John Sevier was elected in North Carolina's 5th district, which included the territory of the former State of Franklin.
He continued to serve after the entirety of his district was ceded to the federal government and formed the Southwest Territory.
From achieving statehood on December 4, 1796, until 1803, Tennessee elected one representative, at-large, statewide.
Tennessee elected three representatives, at-large, statewide for the 8th Congress, and then in separate districts after that.