The marriage was morganatic. His wife was not HRH Princess Edward because the King issued letters patent specifically denying her the right to share her husband's rank. Once that happened, it became law.
Camilla's assumption of a lesser style and rank as HRH The Princess Consort (provided Parliament agrees to remove her right to be The Queen) would also be morganatic. It is not possible for The King to issue letters patent creating her a princess when she is HM The Queen.
Camilla's assumption of a lesser style and rank as HRH The Princess Consort (provided Parliament agrees to remove her right to be The Queen) would also be morganatic. It is not possible for The King to issue letters patent creating her a princess when she is HM The Queen.