Frederick I, of the Hohenzollern dynasty, was Elector of Brandenburg and Duke of Prussia in personal union. The latter function he upgraded to royalty, becoming the first King in Prussia. From 1707 he
Portrait by Adam de Clerck, 1685
Coronation of Frederick as King in Prussia at Königsberg Castle in 1701
Frederick I on a coin from 1691
Frederick William was Elector of Brandenburg and Duke of Prussia, thus ruler of Brandenburg-Prussia, from 1640 until his death in 1688. A member of the House of Hohenzollern, he is popularly known as
Portrait by Frans Luycx, c. 1650
Portrait by Mathias Czwiczek, 1642
Portrait by Abraham and Gedeon Romandon, 1687–1688
Statue of Frederick William at Charlottenburg Palace, Berlin