Gustav I of Sweden King of Sweden from 1523 to 1560 (1496–1560) Parents Cecilia Månsdotter Erik Johansson Vasa Children Princess Elizabeth of Sweden Anna of Sweden Eric XIV of Sweden Princess Sophia of Sweden Charles IX of Sweden Princess Cecilia of Sweden Magnus, Duke of Östergötland John III of Sweden Catherine Vasa of Sweden Siblings Margareta Eriksdotter Vasa Partners Catherine of Saxe-Lauenburg Margaret Leijonhufvud Catherine Stenbock
