Here's a late marriage (The bride is age 61.) for a daughter of Logan & Martha (Gillum) Bohannon in KY. The bride is listed as white; don't know what the rules were in Kentucky during that time if she was part Native American.
"Kentucky, County Marriages, 1797-1954," database with images, FamilySearch(https://familysearch.org/ark:/61903/1:1:V65S-8BH : accessed 26 March 2016), Logan C Bohannon in entry for Tildon Blanton and Lula Bowman, 08 Apr 1946; citing p. 111, Magoffin, Kentucky, United States, Madison County Courthouse, Richmond; FHL microfilm 988,592.
Hope this helps! -NGP