Example image of eyePlorer eyePlorer map for 'Oldenburg (state)': Germany Low German Oldenburg County Duchy Grand duchy Weser Denmark House of Oldenburg Russia Duchy of Saxony Frederick I, Holy Roman Emperor Appanage Delmenhorst Frisians Bremen (state) Prince-Bishopric of Münster Christian I of Denmark Dietrich, Count of Oldenburg Duchy of Schleswig Holstein Monarchy of Norway Monarchy of Sweden Archdiocese of Bremen Gerhard VI, Count of Oldenburg Charles V, Holy Roman Emperor Protestantism Schmalkaldic League Christopher of Oldenburg Jever Varel Johann Tserclaes, Count of Tilly Thirty Years' War Tariff Renaissance Bishopric of Lübeck German Mediatisation Oldenburger Münsterland Napoleonic Wars First French Empire Free State of Oldenburg German Empire Weimar Republic Lower Saxony 1747 Holy Roman Empire incumbents Anton-Günther, Duke of Oldenburg Christian V, Count of Oldenburg Coat of arms of Oldenburg Duke Christian of Oldenburg Grand Duchy of Oldenburg State Railways