http://familytreemaker.genealogy.com/users/p/u/r/Rachel-Purpel-/PDFGENE1.pdf

There seem to be two tracks for the life of Mary Whitney, daughter of Nathan Whitney and Mary Holman. I have entered what I think is the correct data, with her marriage to John Priest and early death following the birth of her daughter, Mary. However there is data that states that, seemingly, the same Mary Whitney was married to a Jeremiah Priest, son of Gabriel (cousin to John Priest, above), had several children, and lived until the early 1800's. It is interesting that all of Jeremiah's children with said Mary Whitney are born after the birth of Mary Priest in 1739.

http://wiki.whitneygen.org/wrg/index.php/Family:Whitney,_Mary_%281727-1810%29

Several sources list Jeremiah's wife as unknown.