Frederick I, Elector of Brandenburg
Frederick was the last Burgrave of Nuremberg from 1397 to 1427, Margrave of Brandenburg-Ansbach from 1398, Margrave of Brandenburg-Kulmbach from 1420, and Elector of Brandenburg from 1415 until his death. He became the first member of the House of Hohenzollern to rule the Margraviate of Brandenburg.
Frederick I as depicted on the Cadolzburger Altar (by the Meister des Cadolzburger Altars, c. 1425-1430)
Burgrave Frederick, 15th century portrait
The Burgraviate of Nuremberg was a state of the Holy Roman Empire from the early 12th to the late 15th centuries. As a burgraviate, it was a county seated in the town of Nuremberg; almost two centuries passed before the burgraviate lost power over the city, which became independent from 1219. Eventually, the burgraviate was partitioned to form Brandenburg-Ansbach and Brandenburg-Bayreuth.
Coat of arms of the Hohenzollern as burgraves, in a stained glass window at Hohenzollern Castle
Nuremberg Imperial Castle
The Burgrave's Castle
Cadolzburg Castle (from 1260 seat of the Burgraves)