John Frederick, Margrave of Brandenburg-Ansbach succeeded his father Albert II as margrave of Ansbach in 1667. He married his second wife Princess Eleonore Erdmuthe of Saxe-Eisenach on 4 November 1681. Their daughter Wilhelmine Charlotte Caroline, Margravine of Brandenburg-Ansbach married George II of Great Britain before he became king.

Albert II or V of Brandenburg-Ansbach was a German prince, who was Margrave of Ansbach from 1634 until his death.