I too am interested in finding out more about my maternal lineage. Your information is most interesting to me. The reasons why it's so interesting follows:
My mother is Dorothy Slaton Porter. Her father was John Slaton. He was born in Taliaferro County, Ga. He moved a number of times and eventually settled in California. He was half Choctaw Indian (I know your post makes reference of Cherokee Indian, but people do and can make mistakes even in their own family history).
On a family vacation in the 80's my parents and I went to the Taliaferro County, GA and reviewed some surviving public records. One thing my mother discovered is that her father had named many of his children after his own siblings. Some of his brother's and sister's names were Arthur, Fannie, James, Ruth, Walter, Will to name a few that I remember right now.
Lastly, family history states that John and I believe some of his siblings were not actually Slatons, but actually had the last name of Marshall. Either their mother married a Slaton or a family with the Slaton name took them in, and they began to use the name Slaton. This too could have been miscontrued over the years. Does your grandfather's first name of Marshall have a similar story to it, or is it simply the name chosen for him?
I do hope you still check this site and can lend any additional history you might have.
After John left Georgia, he never saw any of his brothers or sisters again.
He did stay in touch with a brother by the name of Arthur Slaton, who lived in Detroit. He is now deceased.
I believe my grandfather died in California around 1955.