The will of Moses Hill of Athol, Massachusetts, is good solid evidence. He named Molly Young, wife of Simeon Young, as his daughter. By the vital records in Athol
https://ma-vitalrecords.org/MA/Worcester/Athol/aBirthsH.shtml he had two dtrs. Mary and Lucy and a lot of sons. Lucy married Ezra Thayer of Orwell, Vermont, and died before Moses' will. Her children are mentioned. Daughter Mary filed an intention to marry Simeon Young (citation on profiel), though no marriage record itself exists. So Molly of the will and Mary are the same person b. Athol 4 Oct 1767. Her children would be named young.
The other Mary [Hill?] who was married to Thomas Mansfield, was not born in Athol in 1767 and not the dtr of Moses. All you need to do is remove the birth information in the data section and the biography and then Hill-2613 will be correct, as far as we know.
Take a look at Mansfield's bio. He's confuzzled. His birth place says Maryland not Massachusetts. There was a Thomas Mansfield b. on that date in Beverly, but it's probably not him. And there were two children of Thomas who died in Beverly in 1758 and 1760, which could be him
https://ma-vitalrecords.org/MA/Essex/Beverly/Images/Beverly_D503.shtml You should remove those parents you added.