I have been researching the Faulkner/Falkner/Fortners of Edgefield for over 30 years. I've never been able to tie the 1790 folks to any.I can not place Nancy with any other Faulkners.
I have James as the father of Amos Richard Faulkner, Sr. and Willis (both born ca. 1794) and 4 daughters. I have never been able to tie him to the other Fortner/Faulkner, etc. of Edgefield.
I have Nathan lst married to ? Bussey and had sons Allen, Isaac, Ansel, Nathan Jr. By his 2nd wife Margaret Robison/Robertson he had sons William and Reuben in St. Clair Co., AL.There were also daughters.