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
Caroline of Ansbach to ensure that the King and Queen could not be present at the birth. George and Caroline were horrified. Traditionally, royal births were witnessed by members of the family and senior courtiers to guard against supposititious children, and Augusta had been forced by her husband to ride in a rattling carriage for an hour and a half while heavily pregnant and in pain. With a party including two of her daughters and Lord Hervey, the Queen raced over to St. James's Palace, where Frederick had taken Augusta. Caroline was relieved to discover that Augusta had given birth to a "poor,