Events from the year 1566 in Sweden
Incumbents
Monarch – Eric XIV
Events
26 March - 250 Swedes die in an attempt to capture Bohus Fortress. June - Nils Svantesson Sture falls from favor with the monarch and are exposed to public humiliation.
13 July – The Danes burn Bogesund. 15 July – The Danes burn Falköping. 23 July – The Danes burn Skara domkyrka. 26 July - Action of 26 July 1566 - Ivan the Terrible ask to have the King's sister-in-law Catherine Jagiellon delivered as a hostage to use against Poland. - The Danes under Daniel Rantzau pillage Västergötland, while the Swedes pillage Skåne.
Births
20 June - Sigismund III Vasa, monarch (died 1632) 15 October - Sigrid of Sweden (1566–1633), princess (died 1633)
Deaths
September 9 - Klas Horn, naval admiral (born 1517)
