[1] In 1433 the Wettins finally concluded peace with the Hussites and in 1438 Frederick led Saxon forces to victory in the Battle of Sellnitz.

Also in 1438 it was decided that Frederick, and not his rival Bernard IV, duke of Saxe-Lauenburg, was entitled to exercise the Saxon electoral vote at the elections for the German throne.

The elector then aided Albert II to secure this dignity, performing a similar service for his own brother-in-law, Frederick two years later.

Disputes over the distribution led however in 1446 to the Saxon Brother War, which found an end only on 27 January 1451 with the peace of Naumburg.

[3] They had eight children: July 1455 saw the Prinzenraub, the attempt of a knight named Kunz von Kaufungen to abduct Frederick's sons Ernest and Albert.