The Oath by Law Elizabeth was required to take
The oath Elizabeth took left out ,"of my Realm". Thus the oath is completely bogus and she was not entitled by law to be called Queen.
Caveat: This video is by a Youtuber named Rob Hay. Its an interesting perspective and can be used as a start for further study. It is by no means conclusive.
-Rothschild (Bauer or Bower) -Bruce -Cavendish (Kennedy) -De Medici -Hapsburg -Krupp -Plantagenet -Rockefeller -Romanov -Sinclair (St. Clair) -Warburg (del Banco) -Windsor (Saxe-Coburg-Gothe) -Sassoon