Frederick IV of Nuremberg
Frederick IV (c. 1287 – 19 May 1332) was Burgrave of Nuremberg from 1300, succeeding his elder brother John I; he was the younger son of Frederick III and Helene of Saxony. In 1307 he and King Albert I led an imperial army against the Wettin margraves, but were defeated at Lucka.
In 1322 he fought for Louis the Bavarian at Mühldorf and helped capture the Habsburg claimant Frederick the Fair. In 1331 he bought Ansbach, nucleus of the later Hohenzollern principality. His wife Margaret of Görz-Tyrol bore him many children, including his successor John II. Frederick died in 1332.