Gustav I Vasa

Timeline

1. 1496–1521Rydboholm · UpplandGustav came from a Swedish noble family and was once held in Denmark as a political hostage. In 1520 King Christian II of Denmark carried out a bloody purge in Stockholm (the Stockholm Bloodbath), in which Gustav's father and many relatives were killed. After escaping, Gustav began organizing armed resistance to Danish rule.
2. 1521–1523Stockholm · StockholmGustav raised an army of peasants in Dalarna, and with financial and naval support from Lübeck of the Hanseatic League gradually drove out Danish forces. On June 6, 1520 (now Sweden's National Day), he was elected King of Sweden at the Strängnäs Diet, marking Sweden's formal break from the Kalmar Union, which then collapsed.
3. 1523–1544Stockholm · SwedenGustav implemented the Lutheran Reformation; the 1527 Västerås Diet decreed that Catholic Church property revert to the crown and severed ties with the Roman papacy. He built a modern bureaucratic administration, unified taxation, and reorganized the army. The 1544 Västerås Diet established hereditary monarchy, consolidating the Vasa dynasty's legitimacy.
4. 1544–1560Stockholm · SwedenIn his later years Gustav continued to strengthen centralization and suppressed several noble and peasant rebellions. He trained his heir to ensure a smooth transfer of power to his eldest son Erik XIV. Gustav died in Stockholm on September 29, 1560, leaving behind a unified, independent modern Swedish state with an established national religion.