Try the African-Native Genealogy Webpage (at Afrigeneas "Links") There is also a good listing of links sponsored by the Black Native American Association at: http://www.bnaa.org/Links/links.shtml
An Internet search might also yield information on Black Cherokees specific to them as a group or to certain states. If you haven't done so already - try a surname search at the LDS Church Family History site (also at "Links") You may also wish to post your query to the African-Native American Forum at Afrigeneas. Good Luck!

Alva Stevenson
World Research Forum Mgr