Have you tried these webpages?
http://www.geocities.com/Heartland/Acres/1419/

and http://freepages.genealogy.rootsweb.com/~cwbush/bushx.htm

Have you checked into DNA testing? The sites already have a lot of Bush results to look at before submitting a male sample to try for a match.

Are you certain @ a GA connection? Many of the Bush ancestors left VA & obtained land in KY after the REv War.

My line includes a Josiah b.1733 in VA to Phillip Bush & Mary Bryan; married to Sarah Brown, their son Josiah b.@1764 in VA; Josiah b. 1804 in Barren Co., KY to George Bush & Deliah Armine Filbert/Filboid/Philbert; He married Jane Ann Button & they had a son named Josiah b. 1844 in KY; that Josiah had a brother named William Thompson Bush who married Martha A., they had a son Josiah b.1872 in KY