Elizabeth was born about 1723/24 based on her age at death (38 years). She married Joseph Titus, with whom she had at least four children. She was possibly the sister Elizabeth Titus named in the 1741 will of John Ketcham. If this is correct, then she was married by the time she was 17.
Note: I have created a virtual cemetery for Joseph Titus's descendants, including those of wife Elizabeth, here.