1850 US Census, Georgia, Forsyth County, District 31, Family No. 2, Line 7. Name, Hannah Blackston; Age, 25; female; Birthplace, South Carolina.
1860 US Census, Georgia, Forsyth County, Cumming Post Office, Page No. 447, Family No. 555, Line 21. Name, Joanna Blackston; Age, 36; female; Birthplace, South Carolina; Cannot read or write.