I did some more poking around. This Hattie probably is a part of the Hammonds who were married into the Fannin's plus Thomas McLane 1756 VA ( who's Grandson Hampton B. McLane married Sarah Fannin) Thomas married Maria Elizabeth Addy1852 Coweta, GA . Her parents were Jabob Addy and Mary Rawls 1802. They lived at the Addy Plantation in Coweta
I only comment to show what a small world it was.
Here are a few Hammond's in this group:
William Hammondsb.1775 VA?-1822 St. Clair, Tallapoosa, AL