Wallis Simpson must be spinning in her grave. The royals would not let her use the title HRH because she was a divorcee. Edward VIII tried to get them to change their minds, but they were adamant about not giving Wallis a royal title. This was the final blow for Edward, and he severed his ties with the other royals. How times have changed.
Seems like I remember that one of Camilla's ancestors was a similar consort to a similar royal way, way back when - maybe it was to Edward VII? Kind of eerie, I thought at the time.