That link is to a pedigree supplied by another user. I see no proof Harvest Kellem was his nom de plume while enslaved. You should contact the owner of that pedigree and request his/her sources. Family history should be supported by "proof" in the form of written documentation. Your tree should closely resemble "Johnson Family Tree" owned by acjohnson786. View at person.ancestry.com/tree/58827075/person/40328299575.