Thanks for your reply, but as you said the dates don't line up. Your George W. could of course be a relative of my George W.
I do have some additional info since I posted that message:
George W. Stewart was born May 23, 1810 in "East Tennessee." He m. Mary E. Crozier on April 12, 1838 in Benton (now Calhoun) County, Alabama. She was born ca. 1811 "in Tennessee."
If you run across either of them in your research, please let me know. I have some additional "east TN" data from the library, but haven't had a chance to follow up on it yet.