Rulers of Waldeck and Pyrmont Reigning Princes 1712–1918 The princely house of Waldeck and Pyrmont is closely related to the royal family of the Netherlands: the last ruling prince, Frederick, was the brother of Dutch Queen consort Emma. In 1905, Waldeck and Pyrmont had an area of 1121 km² and a population of 59,000.Īt the end of World War I, and during the German Revolution, resulting in the fall of all the German monarchies, the prince abdicated and Waldeck and Pyrmont became a Free State within the Weimar Republic. In 1871 the principality became a constituent state of the new German Empire. Prussian administration served to reduce administrative costs for the small state and was based on a 10-year contract that was repeatedly renewed until Waldeck was formally absorbed into Prussia in 1929. From 1868 onward, the principality was administered by Prussia, but retained its legislative sovereignty. The independence of the principality was confirmed in 1815 by the Congress of Vienna, and Waldeck and Pyrmont became a member of the German Confederation. For a brief period, 1805 to 1812, Pyrmont was 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. In January 1712, the count of Waldeck and Pyrmont was elevated to prince by Charles VI, Holy Roman Emperor. In 1625 the small county of Pyrmont became part of the county through inheritance.

In 1655, its seat and the chief residence of its rulers shifted from the castle and small town of Waldeck, overlooking the Eder river and first mentioned in 1120, to Arolsen. Waldeck was a county within the Holy Roman Empire from about 1200 - its counts included Adolf II of Waldeck from 1270 to 1276.

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