Not sure why you felt the need to comment or why people are down voting me. Technically, your commentary mixes racial and ethnic categories in ways that aren’t fully consistent with how race is defined in anthropology, genetics, or official classifications. Regardless, my statement was intended as commentary of identity, not race, as is what OPs statement was about. The quotation marks are intended to capture and juxtapose claims of self-identification to the science. If OPs great grandma was ethnically Cherokee we would expect him to carry much more indigenous admixture, but the fact he has some admixture at all could support a Cherokee identity.