Christiana County, Tennessee
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Roane, Monroe, and Blount counties. But a month after its creation the Tennessee legislature renamed it Loudon County.
"Rotating Formation Tennessee County Boundary Maps" (1777-1985) may be viewed for free at the MapofUS.org website. They rely on AniMap 3.0 software.
- Robert M. McBride, "Lost Counties of Tennessee," East Tennessee Historical Society's Publications 38 (1966): 7.