Have you read the history of the tribes (Cherokee, Chickasaw, Choctaw, Seminole, and Creek) who made the Trail of Tears journey; specifically with regard to the Dawes role...and the entering of african american slaves brought to OK by those tribes. I don't know if your people were part of that history or not. But....if you study the history of the Dawes...and the fact that the US Government required the individual tribes to include these freed slaves on their tribal listings. That could fill in some blanks for you. I would also think that if you search on the "african-native american" you might find all sorts of sites....and organizations specifically interested in the same thing you are. It has been my understanding that it has been even more difficult for this intermarrying to find information...than it was for the caucasian and native american intermarrying. I think that perhaps both the native american and african american were separated, and names changed for the same reasons....the genocide that was being perpetrated against their people. So...tracing is sometimes more difficult in that situation. So....I wish you luck. jes