in 1604. Crown Prince Gustav Adolph had Gagnef-Floda in Dalecarlia as a duchy from 1610.

Upon his father's death in October 1611, a sixteen-year-old Gustavus inherited the throne although the Swedish Riksdag declared he could not formally be crowned King until he reached the age of 24. The Swedish Statesman Axel Oxenstierna acted as regent briefly until Gustavus was declared of age and able to reign himself at age seventeen in January 1612. He also inherited an