Eleanor (Cowan) Gillespy. Eleanor Gillespy's tombstone states:
Given a DOD of 1831 at age 57 implies a DOB of 1831-57 = b. 1774. Since Eleanor is believed to be the first born of Person:William Cowan (25) and Jane Walker, their marriage date would seem to be slightly before Eleanors birth, in 1774. Ie, her parents were married about 1773.