John III of Sweden Swedish king (1537-1592) (1537–1592) Parents Margaret Leijonhufvud Gustav I of Sweden Children Isabella Johansdotter Sofia Johansdotter (Gyllenhielm) Sigismund III Vasa John, Duke of Östergötland Princess Anna of Sweden Lucretia Gyllenhielm Julius Gyllenhielm Siblings Princess Cecilia of Sweden Eric XIV of Sweden Princess Elizabeth of Sweden Catherine Vasa of Sweden Magnus, Duke of Östergötland Princess Sophia of Sweden Anna of Sweden Charles IX of Sweden Partners Karin Hansdotter Catherine Jagellon Gunilla Bielke
