Listed on the 1880 census of San Augustine Co. Texas is AMELIA IREDEL, b. 1837 Ms., wife of John Sanders.
Amelia was the daughter of James Johnston, b. 1776 Va and died abt 1851 Washington Co., Alabama --and Martha _______, born bef 1803 and died bef 1850, probably in Washington Co., Alabama.Martha was the widow of Levi AINSWORTH, who continued to have children born after Levi died, by James Johnston.
Amelia, Jane and Lafayette Ainsworth/Johnston are acknowledged in the will of both Martha and James Johnston.
The surname of Martha is not known, and I'm wondering if it might be "IREDELL" or if there is a Johnston-Iredell connection.
Parents of James Johnston were John Johnston (1750) and Joyce POWELL(1850).