William Frederick, Margrave of Brandenburg-Ansbach in Unterreichenbach and was succeeded by his son Charles William Frederick, called "The Wild Margrave". 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
Princess Frederica Caroline of Saxe-Coburg-Saalfeld Princess Frederica Caroline of Saxe-Coburg-Saalfeld Princess Frederica Caroline of Saxe-Coburg-Saalfeld, Duchess in Saxony (24 June 1735 – 18 February 1791) was a princess of Saxe-Coburg-Saalfeld by birth and through marriage the last Margravine of Brandenburg-Ansbach and Bayreuth. Frederica Caroline was the fifth child and youngest daughter of Franz Josias, Duke of Saxe-Coburg-Saalfeld and Princess Anna Sophie of Schwarzburg-Rudolstadt (1700–1780), daughter of Louis Frederick I, Prince of Schwarzburg-Rudolstadt. On 22 November 1754 in Coburg, she married Margrave Karl Alexander of Brandenburg-Ansbach and Bayreuth (1736-1806). The marriage was concluded for dynastic reasons. Although Frederica Caroline was considered virtuous, gentle, charitable and devout,