Holy Crown of Hungary
Péter Révay, a Crown Guard, expounded this doctrine in his works "Commentarius De Sacra Regni Hungariae Corona" (Explanation of the Holy Crown of the Kingdom of Hungary, published in Augsburg, 1613) and "De monarchia et Sacra Corona Regni Hungariae" (About the Monarchy and the Holy Crown of Hungary, Frankfurt, 1659).