For a brief period, from 1805 to 1812, Pyrmont was again a separate principality as a result of inheritance and partition after the death of the previous prince, but the two parts were united again in 1812. The principality of Waldeck-Pyrmont retained its status after the Congress of Vienna of 1815 and became a member of the German Confederation. In 1813, the inhabitants of Pyrmont began to protest at their lack of autonomy within Waldeck–Pyrmont and the separate constitutional nature of the two territories was confirmed the following year, until a formal union was established in 1849.