Here's a helpful article on the ancestry of Rose Stoughton from In Re Genealogica.
Some Proposed Ancestry for Rose Ive, Grandmother of Great Migration Ancestor Rose Stoughton Otis by Matthew Hovious http://matthewhovious.blogspot.com/2017/12/some-proposed-ancestry-f...
I did some work in this area many years ago but didn't get nearly so far. Looking forward to seeing what else he has found.