^ A more accurate comparison would be if QEII had said 'no' to Camilla. After all, the only reason her father was King, and she is Queen was because a divorced spouse for the POW or King was completely unacceptable and incompatible with his future role as Head of the Church of England.
Even if Edward was allowed to marry Wallis in 1936, our present Queen would still have
been our Queen today as Edward had no heirs and I doubt very much that Wallis would
have a child as she was already in her forties. So really the royal family hierarchy
would still be as it is today. IMO