Prince Friedrich Wilhelm Ludwig of Prussia (30 October 1794 – 27 July 1863), known in English as Frederick, was a Prussian prince, general of the royal cavalry, and division commander.

Born in Berlin, Frederick was the son of Prince Louis Charles of Prussia and Duchess Frederica of Mecklenburg-Strelitz, later Queen of Hanover, nephew of King Frederick William III of Prussia and stepson of King Ernest Augustus I of Hanover.

Princess Charlotte of Wales was interested in Frederick in 1814 and hoped to marry him. The pair met several times. However, the Prince suddenly got engaged to the daughter of Alexius Frederick Christian, Duke of Anhalt-Bernburg, Princess Louise of Anhalt-Bernburg, whom he married on 21 November 1817 at Ballenstedt. The couple had two sons:

Although both of their sons lived to advanced age, neither of them married or father any children.

From 1815 until his death, the Prince served as the Commander of 1st (Silesian) Life Cuirassiers "Great Elector". He resided in a palace in Wilhelmstrasse until 1820, when he became Commander of the 20th Division in Düsseldorf and moved to Jägerhof Castle. He had two more wings built during his stay in the castle. The castle soon became the center of social and cultural life of the city, as the Prince and Princess Frederick were both interested in art and talented artists themselves. Prince Frederick was among the founders of the Düsseldorf art, music and drama club and served as its patron.

Much like his cousin, King Frederick William IV of Prussia, Frederick displayed interest in the Middle Ages and the castles of Rhine Province. He acquired Fatzberg Castle, turned it into his summer residence and named it Burg Rheinstein.

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