John Frederick, Margrave of Brandenburg-Ansbach (18 October 1654 – 22 March 1686) succeeded his father Albert II as margrave of Ansbach in 1667.

[1] He married his second wife Princess Eleonore Erdmuthe of Saxe-Eisenach on 4 November 1681.

Their daughter Wilhelmine Charlotte Caroline, Margravine of Brandenburg-Ansbach (Caroline of Ansbach) married George II of Great Britain before he became king.

[2] By Margravine Johanna Elisabeth of Baden-Durlach, daughter of Frederick VI, Margrave of Baden-Durlach, and his wife Christina Magdalena of the Palatinate-Zweibrücken: By Princess Eleonore Erdmuthe of Saxe-Eisenach: