Frederick William III, Duke of Schleswig-Holstein-Sonderburg-Beck
Frederick William III, Duke of Schleswig-Holstein-Sonderburg-Beck 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 was commander of the Füsilier Regiments No. 46. During the Seven Years' War, he fell in the Battle of Prague in 1757. He was unmarried and childless; he was succeed as Duke of Beck by his uncle Charles Louis.Ancestry
