Laura, nobody can possibly offer advice because you did not indicate either the information you want to contribute or the sources you have found for the information.
Looking at the linked profile, I see that it has been gathering dust here since 2011 and has only 1 "source" cited. I used quotes for the so-called source because it is a family tree, which is completely unacceptable as a source for pre-1700 profiles. It would be a very wonderful thing, indeed, if you have some valid sources for James Moulton's profile.