Family tradition is that she was the daughter of a Delaware Indianchie f.
Posted in Rootsweb archives is:
"After Old Samuel's death, Mary, Samuel's widow, and her grown sons,Jo hn, Joseph and Samuel Jr. sold all their land holdings in NorthCarolin a and moved to Knox County, Kentucky around 1803. John andPriscilla ha d several children that came with them, John Arthur Jr.Joseph Arthur, a nd Elias Arthur.. They also had a daughter, Nancy,who married James Ca rlton and is believed to have remained in LincolnCounty, North Carolin a. The sons
settled in Knox County Kentucky with the rest of the family."
She disappeared from the tax list so probably died.