I can't find who his father was. I found him listed on the 1900 census as the step son of James W. Sheldon. His mother was Sarah A. Moore. The Cherokee line was suppossed to be his family. Perhaps his father.
I Just Found a US National Archives Enrollment for Cherokee Census Card D1214 (1893-1914) Which lists Sarah A Moore and George W Moore (He has been linked to that name before) on the same sheet.