I just found Clemmie Oldham Parks on your site.
She was my father’s mother. I found her correct last name a few years ago. She was a mystery to us. My father and his brother would not talk about her, only vaguely about the American Indian connection. Of course, you found her older sister’s appeal, in the name of all the siblings, for admission to the Mississippi Choctaw tribe.
I saw her at least once, when I was a small child.
There is nothing about John B Parks, her husband, except the marriage record you report.