1790 Census, South Carolina had 5 entries for George Ross: www.rootsweb.com/~usgenweb/sc/census/sca_1790.html
p.26, Lancaster Co., Camden District p.30, York Co, Camden District p.69, Greenville Co, 96 District p.74, (col. 1) Laurens Co, 96 District p.42, Charlestown District.
Perhaps the George Ross in the 1782 S.C. Legislature was the George Ross, p.42, Charlestown District ?
An interesting aspect was the p.69, Greenville County, 96 District, where a George Ross was next to a Jeremiah Stokes.There was a Mr. Stokes (not sure if Jeremiah or Nehemiah) who was a partner of Patrick Adair (dc.1764), Merchant, of Belfast Ireland, & London England. Mr. Stokes may have been agent / landlord of Jesse Adair or his father-in-law, Samuel Stanton in Belfast.