I see two sources that support that Elizabeth Wheelock was married to Benjamin Wheelock unless you think it's a different Benjamin Wheelock from Mendon.
The will of John French, Sr. says that his daughter is Elizabeth Wheelock of Mendon.
https://www.geni.com/photo/view?album_type=photos_of_me&id=6000000004398718400&photo_id=6000000177135749852&position=0
And "Torrey, Clarence Almon, New England Marriages Prior to 1700, Genealogical Publishing Co., (Baltimore, MD) p 802" shows the marriage.
https://www.geni.com/documents/view?doc_id=6000000177231172917