A little healthy skepticism never hurts. I, for one, don't really know enough to reach any particular conclusion, as I don't really know how many rare versions the Miller [?] family claims. I guess assertions that contribute to somebody's scholarly reputation, and that can't be traced, are inherently suspect.

Speaking of things I am ignorant of, is it plausible that the odd words are originally Romany or Cant words? (Assuming that there is such a thing as a cant word that does not originate somewhere else?)