James traveled with his father, Luke, and his step-mother, America and their family. His biological mother was Susan Marinda Poteet Johnson. She died in St. Joseph, Buchanan County, Missouri Sep 27, 1846. His biological siblings that traveled with the company were Sarah Eliza, Fanny Catherine, Vashtie Emily, and Solomon Luke. One sister, Emily Susan died during infancy in 1835. Another older sister did not come west with this company: Mary Elsie.
Birth date and death date listed were found in a personal, online family history record (such as Family Tree, Ancestry, or My Heritage) without any accompanying documentation. Further research is needed to verify its accuracy.