Posted by Deborah on 27/2/2022, 1:35 pm, in reply to "Re: Davis Family"
If your Mary was Lady Mary Tavistock, she would have been part of the RUSSELL family of the Duke of Bedford or Marquess of Tavistock. See https://en.wikipedia.org/wiki/Duke_of_Bedford I note that your Mary was described as being born in Kent on her death registration.