After reaching the
age of majority in 1329, Frederick faced prolonged conflicts with vassals and neighbouring lords. These disputes largely stemmed from his declaration of peace in 1338, which significantly curtailed the rights and influence of small landlords and local rulers, and was intended to bring those groups under tighter princely control. In 1342, nobles concerned about the loss of their privileges and autonomy formed a league against him. They assembled at
Arnstadt (southwest of
Erfurt), a confrontation that became known as the
Thuringian Count's War. The conflict continued until 1346. After the death of
Emperor Louis IV, the Bavarian faction sought to persuade Frederick to accept the German crown. He declined, mistrusting the uncertain loyalty of the electors, and supported
Charles IV instead. Frederick focused on consolidating his territories and countering Charles's ambitions. At a meeting in
Bautzen in 1348, both rulers acknowledged the existing territorial situation. Frederick died on 18 November 1349 at
Wartburg. == Family ==