Hannah Dexter, d/o Benjamin Dexter and Hannah Stone, b. 5 Dec 1770, d. 18 Sep 1858 [sic, see attached comment], m. 13 Oct 1787 Benjamin Morton Jr. In 1806 moved to Florence, NY; in 1814 to Camden, NY.
[Note: Find A Grave shows a death date of 10 Oct 1848, though since there is no gravestone image, its credibility and basis is unclear. However, 18 Sep 1858 is her brother Benjamin's death date, and Hannah is not found in the 1850 census, so the date given in this source is probably bogus.]