I am a descendant of Mayflower Passenger Richard More and of Rev. William Skepper, both noted in the Douglas Richardson books Plantagenet Ancestry and Magna Carta Ancestry, which details their royal and historically famous ancesters of the Medieval era.
For several years I have researched their ancestry from these books and other books, documents, etc.. and have compiled a wealth of information about their Medieval ancestry which included about every king and other royal person of that era along with some historically famous persons, including Sir William Marshal, "The Greatest Knight".
I have a 43 page index of royal/historic persons in the Richard More and Rev. William Skepper ancestry and can provide it via e-mail attachment if interested. Files (in narrative format, not Gedcoms) on persons of interest can be provided from the index.