There are 3 titles associated with this person.

@book{ wphp_7372
  author={Osborn,Sarah},
  year={1763},
  title={The nature certainty, and evidence of true Christianity. In a letter from a gentlewoman in New-England, to her dear friend in great darkness, doubt, and concern of a religious nature. N.B. Though this letter was wrote in great privacy from one friend to another; yet on representing that by allowing it to be printed, it would probably reach to many others in the like afflicted case, and by the grace of God be very helpful to them; the writer was at length prevailed on to suffer it,--provided her name and place of abode remain concealed.},
  publisher={},
  address={London},    }
@book{ wphp_21507
  author={Osborn,Sarah and Anthony,Susanna},
  year={1807},
  title={Familiar letters, written by Mrs. Sarah Osborn, and Miss Susanna Anthony, late of Newport, Rhode-Island. Published according to act of Congress.},
  publisher={},
  address={Newport},    }
@book{ wphp_18954
  author={Osborn,Sarah and Hopkins,Samuel},
  year={1814},
  title={Memoirs of the life of Mrs. Sarah Osborn, who died at Newport, (Rhode-Island), on the second day of August, 1796. In the eighty-third year of her age. By Samuel Hopkins, D.D. Pastor of the 1st Congregational Church in Newport. Second edition.},
  publisher={Nathan Elliot or Elliott \& },
  address={Catskill},    }