Hetty is reported in multiple family trees at ancestry.com as the daughter of Johnson Titus and Anna Stout. Note that Cooley's "Genealogy of Early Settlers in Trenton and Ewing ..." does not include her in this family, and she is not mentioned in the published abstract of Johnson Titus's 1817 will. Further investigation is needed.
She married Wilson Blackwell on 6 Nov. 1813 in old Hunterdon Co., NJ. They had 8 children together, all linked below. She was listed as a member of Hopewell Baptist Church, 1847.