Hello, Frances, I have an Elizabeth Alexander in my family line. She was in Union Co., GA area 1840-1870. I lose her after the 1870 census. She was approximately 50 according to the 1870 census. There was a Joseph Anderson in Union Co. also. He commanded the home guard (Confederate) for the Union, Fannin & Townes Counties during the Civil War. Joseph is not listed in the 1870 Union Co., census. Could these be the same people you listed? I will share my research if you are interested. Quentin Alexander