Jim - My Martin info shows that Buena Vista Porter (1863-1935)was the Mother of James Bailey Martin (Abt. 1887 - ?. I have Buena Vista Porter's Husband as James Walker Martin (1863 - 1945).
I have Buena's parents as John Clayton Porter and Nancy Carolyn Johnson and her grandparents as Hugh Porter (1786 - 1860) out of Pickens Co.,SC and dying in Forsyth Co., GA. Grandmother was Mary Witherspoon.
This information is not my research, so the source is not original.