Jill, I don't know if I replied to you, or if I even saw the posting. Hope the address is still good.
Asa and Margaret and family were on the 1850 Cass Co. GA census. They moved to Texas and he is on the 1860 Angelina Co. TX census (listed as Amos T.) They are in Panola Co. TX in 1870 and Gregg Co. TX in 1880. Asa died in Gregg Co. in 1893. I don't know where or when Margaret died, but it was between 1880 and 1891.