Apostolical King or Apostolical Majesty
Apostolical King or Apostolical Majesty a title of the kings of Hungary conferred by Pope Sylvester II in 1000 upon Duke Stephen I on account of his zeal for the propagation of the Christian faith. It was renewed in 1756 by Clement XIII for Maria Theresa and her successors on the throne of Austria; abolished in 1848, but reassumed (in the form of "Apostolical Majesty") in 1852.