Emma Siggins White, when she wasn't utterly incompetent, was as big a fraudster as Gustave Anjou. Her book, and anything derived from it at however many removes, is worse than useless - it's deceptive, misleading and BOGUS.
Specifically, Robert White of Messing IS NOT related to the White family of Somerset, who ARE NOT related to the "gentry" Whites of the Home Counties. Dear Emma FAKED those connections.