The two kings met in the Battle of Mühldorf on 28 September 1322; Louis of Bavaria emerged victoriously as the German king, he was eventually crowned Holy Roman Emperor in 1328. As a supporter of the Habsburg side, Rudolf I had to face the consequences: when in 1320, the Ascanian rulers of Brandenburg became extinct with the death of Margrave Henry the Younger, Rudolf I, who had administered Brandenburg as regent since 1319, claimed the margraviate as an Ascanian fief. King Louis, however, held that he could not grant the fief to an elector who had voted against him, and gave it to his own son, Louis V, to strengthen his dynasty's position. With the Margraviate of Brandenburg, Louis V also received the electoral vote and the post of an Imperial arch-chamberlain.