I not sure what you mean by 'these folks.' Are you saying that the parents, wife, other relatives and even Isaac Plummer were not related to the Plummers of Maryland some of whom were Quakers? So far,it seems that your focus has been on the language of a man's will, not his family genealogy.
My posting was on a Genealogical Forum.If I wanted information on the tenets of the Quaker religion GenForum would be the last place on Earth that I would consider posting a query.
Are you a genealogist at least somewhat familiar the large Plummer family and their history in Maryland(Quaker and non-Quaker?) If so, let's talk about consultant fees as I need help.Otherwise, let's discontinue this discussion on this venue. My email is below.