My research suggests that many or most of the PEYTONS who settled nineteenth century Indiana were descendants of Philip PEYTON who appears on pages 92, 93, 94 and 95 of PEYTONs Along the Aquia. See my blog post Nelson PEYTON of Kentucky and Indiana for more information. Augusta PEYTON of Harrison County, Indiana seems a proven son of Philip PEYTON according to Revolutionary War records. The John PEYTON who settled at Clark County, Indiana in the early 1800s, I consider to be a "presumed" son of the same Philip PEYTON mentioned above. John's children settled in Clark County. Perhaps someone has been able to document John PEYTON's lineage.
Philip PEYTON and his descent from the PEYTONs of early Colonial Virginia is documented on page 92 of PEYTONs Along the Aquia Genealogy.