Japhet’s great grandson Albert Ripley Leeds was a well-known professor of chemistry, and friend of a younger Increase Mather, descendant of Cotton.
Increase became president of Harvard, and his son married Albert’s daughter. (Libby’s grandmother.) Albert wrote to Increase about Mother Leeds, but apparently did not try to convince him, or anyone else, to speak to the historical society, or the athletic clubs of New Jersey, about exonerating the Leeds name from the tarnish of devil worship.