Example image of eyePlorer eyePlorer map for 'Ernestine duchies': Appanage Germany House of Wettin List of states in the Holy Roman Empire Merseburg Thuringia Weißenfels Zeitz Order of succession House of Schwarzburg Reuss (state) Albert the Bear Anhalt Lauenburg/Elbe Wittenberg Duchy of Saxony Saxe-Lauenburg Saxe-Wittenberg Golden Bull of 1356 Prince-elector Frederick I, Elector of Saxony Landgrave Margrave Margraviate of Meissen Sigismund, Holy Roman Emperor Wettin Frederick II, Elector of Saxony Albert III, Duke of Saxony Ernest, Elector of Saxony Frederick III, Elector of Saxony John Ernest, Duke of Saxe-Coburg John Frederick I, Elector of Saxony John, Elector of Saxony Ernestine duchies John Frederick II, Duke of Saxony John William, Duke of Saxe-Weimar John Casimir, Duke of Saxe-Coburg John Ernest, Duke of Saxe-Eisenach Frederick William I, Duke of Saxe-Weimar Frederick William II, Duke of Saxe-Altenburg Frederick William III, Duke of Saxe-Altenburg John II, Duke of Saxe-Weimar John Philip, Duke of Saxe-Altenburg Martin Luther Holy Roman Empire Protestantism Schmalkaldic League Saxe-Coburg Charles V, Holy Roman Emperor France