Duchy of Jülich
After the Napoleonic Wars, the Congress of Vienna restored the Duchy of Cleves to the Kingdom of Prussia, which combined them with the other Rhenish lands restored from France (Prussian Guelders and the Principality of Moers) with the Rhenish lands gained at Vienna — the old Duchy of Jülich and County of Berg along with parts of the Electorate of Cologne and the Free and Hanseatic City of Cologne and some other smaller territories.