- The Vadstena artiklar grants the King the right to appoint bishops and officials in the Duchies of the princes.
- A clerical meeting in Strängnäs confirm the Örebro artiklar and protest to the pro-Catholic liturgy of the King.
- The Swedish-born Crown Prince Sigismund III Vasa is elected King of Poland,
- The Royal Council forces the King and Crown Prince to agree to Kalmar stadgar, which protects the independence of Sweden during the potential personal union between Sweden and Poland.