I am also doing research on Prince Edward Cty and its neighbor, Appomattox. I am primarily researching the Jennings and families. Possible names by marriage may include White and Johnson. I can go back to about 1835 but I have questions and have appeared to hit a brick wall. If you have any info about this family, please let me know. I will check into your question about Free Blacks in the area. That was an angle that I had previously ignored.