After the 1440 death of Frederick I, Elector of Brandenburg, the Franconian cadet branch of the Hohenzollern family is not politically united with the main Brandenburg line, remaining independent as "Brandenburg-Ansbach".Margrave George the Pious introduces the Protestant Reformation to Ansbach in 1528, leading to the secularization of St. Gumbertus Abbey in 1563.In 1792, Ansbach is annexed by the Hohenzollerns of Prussia.