Herzogenrode Abbey
As affairs in her country have continued to progress towards a greater fostering of the one holy catholic and apostolic Church, we, as supreme pontiff, bishop of Tibur, and vicegerent of Our Lord and Savior on earth, do allow Her Majesty Queen Isabella and her husband King Jean-Louis Gaston and all their successors to style themselves most Catholic.
Ioannes PP XXIII
(sealed with red wax)
As affairs in her country have continued to progress towards a greater fostering of the one holy catholic and apostolic Church, we, as supreme pontiff, bishop of Tibur, and vicegerent of Our Lord and Savior on earth, do allow Her Majesty Queen Isabella and her husband King Jean-Louis Gaston and all their successors to style themselves most Catholic.
Ioannes PP XXIII
(sealed with red wax)