I'm the webmaster of the "Barnum Family Genealogy" website, which has entries for over over 15,000 persons. Although most members of the Barnum family are of European descent, I do have some listings from Civil war records and U.S. Census data for Barnums of Afro-american descent. I will be glad to provide any help that I can in making family connections and providing research help.
Please feel free to visit my website by clicking on the link below. I'll try to provide responses to any questions that you may have.