Tags: Noble.
Frederick William III Duke of Schleswig-Holstein-Sonderburg-Beck (4 November 1723 – 6 May 1757) was a son of Frederick William II and his wife Ursula Anna of Dohna. He succeeded his father as Duke of Beck in 1749.Frederick William was a recipient of the Order of the Red Eagle. He served as a colonel in the Prussian Army and fell in the Battle of Prague in 1757 during the Seven Years’ War. He was unmarried and childless; he was succeed as Duke of Beck by his uncle Charles Louis.