How about contacting the archivists at a few
colleges in Georgia and asking if they know anything
about such a painter. Perhaps local historical societies
would be another place to check with. Or does it come
from a place other than Georgia? Oftentimes, there
might be a regionally well-known artist who is anonymous
anywhere else.
A quick search of 411.com for Sudols in Georgia yields
eight of them. If all else fails, you could call them and ask
if they knew of a grandparent or great grandparent who
painted.
One of my favorite singers hails from Georgia.
Alison Sudol sings for the group 'A Fine Frenzy',
and I could listen to her all day long.