I am still on the hunt for Roswell, Ellen and George. FYI I did get an answer from the library - which has the Monroe County Church Records binder which has the 1st Baptist Church records/transcripts.
It does state the following under membership on page 7: "Bush, Roswell, by letter, July, 1823. Dis. To 2nd Bapt. Ch. July 1834." Under that: "Bush, Ann (probably wife of Roswell)".
The page in The Genealogical Guide to Monroe County by Richard Halsey that I found online has abbreviations that the library doesn't use.
The binder makes no mention of George and his death in 1837.