William Frederick, Margrave of Brandenburg-Ansbach William Frederick, Margrave of Brandenburg-Ansbach William Frederick, Margrave of Brandenburg-Ansbach (8 January 1686 – 7 January 1723), was Margrave of the Principality of Brandenburg-Ansbach from 1703 until his death in 1723. He was the younger brother of Caroline of Ansbach and thus brother-in-law of George II of Great Britain. William Frederick was born in Ansbach in 1686 to John Frederick, Margrave of Brandenburg-Ansbach, and his second wife, Eleonore Erdmuthe of Saxe-Eisenach. His two surviving half-brothers, Margraves Christian Albert and George Frederick II, both died unmarried and without legitimate issue. He married his first cousin, Christiane Charlotte of Württemberg-Winnental. He died
George, Margrave of Brandenburg-Ansbach he attended. He is one of the figures on the "Prussian Homage" painting by Jan Matejko. George went on to marry three times: First to Beatrice de Frangepan (1480 – c.1510); the marriage produced no children. George's second wife was Hedwig of Münsterberg-Oels (1508–1531), daughter of Charles I of Münsterberg-Oels; their marriage produced two daughters: His third wife was Emilie of Saxony (July 27, 1516 – March 9, 1591), daughter of Henry IV, Duke of Saxony and Catherine of Mecklenburg on August 25, 1533: George, Margrave of Brandenburg-Ansbach George of Brandenburg-Ansbach () (4 March 1484 – 27 December 1543), known