Frederick I, Elector of Brandenburg (1371–1440), also known as Frederick VI, Burgrave of Nuremberg; Frederick II, Elector of Brandenburg (1413–1470), Margrave of Brandenburg; Frederick William, Elector of Brandenburg (1620–1688), Duke of Prussia; Frederick I of Prussia (1657–1713), Elector of Brandenburg
Frederick (Middle High German: Friderich, Standard German: Friedrich; 21 September 1371 – 20 September 1440) was the last Burgrave of Nuremberg from 1397 to 1427 (as Frederick VI), Margrave of Brandenburg-Ansbach from 1398, Margrave of Brandenburg-Kulmbach from 1420, and Elector of Brandenburg (as Frederick I) from 1415 until his death.