Mary was born before 1786, the daughter of unknown parents. The place is not known.
Her husband was John Jackson, whom she married in BEF 1806. The place has not been found. Their eight known children were Elizabeth (<1801-?), Mary Horwood (<1804-?), Hannah (<1806-?), John Clark (<1808-?), Kitty (<1809-?), Richard (<1812-?), William (1815-?) and Esau (<1817-?).