Hey Paul, Peter Slagle (1804-1886) moved from the Sinking Creek area of Washington County to Carter County. His parents were Henry and Ellender.Henry came from Fredrick County, MD to Washington County, TN in 1804. This is all I have been able to find. I have information that I have found from others that goes back, but I have not verified any of it. My line goes back through Peter's brother John.