Did this individual also live in Georgia? Do you know which county?
I have 26 George Chamblees in the database, 8 of those are "George W. Chamblee". So, if I can pinpoint a county it will help. It isn't by any chance, Upson Co, GA?
Give all details you can for this oldest ancestor. Where did he live? Did you find him in the census anywhere? Did you look in land records, estate records? How did you come by this record? I'll try to help best I can.