Seeking information on Windham slave named Charity

I am researching the Windham slave name Charity.  She is mentioned in the testimony of her grandson before the Dept. of Interior after filing to be declared a Choctaw Indian.  I want to learn about the Windham family and how she got from Alabama to Mississippi.  In the Census her son appears to be owned by Quincy Windham however I am unable to connect him to any family information at this time. The Windham slave owners lived in Neshoba County, Mississippi.