The Emperor of Mordusia is the Monarch of Mordusia. The throne of Mordusia can, according to Mordusian law, only be occupied by a descendant of Emperor Mordus I. Currently the only royal family in the world that can hold this seat is the House of Orange-Villayn which its full title is the House of Orange-Villayn Rothingren-Traugott Sayon-Mordus. The House of Sayon-Mordus is the original royal house of Mordusia. The House of Orange-Villayn obtained the title of Sayon-Mordus upon Edward III's marriage to Princess Elizabeth of Mordusia (who's full name was Princess Elizabeth Sayon-Modrus)