The Treaty of Vilnius was concluded on 28 November 1561, during the Livonian War, between the Livonian Confederation and the Grand Duchy of Lithuania in Vilnius. With the treaty, the non-Danish and no
German translation of the Pacta subiectionis.
The Duchy of Courland and Semigallia was a duchy in the Baltic region, then known as Livonia, that existed from 1561 to 1569 as a nominal vassal state of the Grand Duchy of Lithuania and subsequently
Treaty of Vilnius (1561)
…the Livonian Order was the "final act" in Livonia's transition from the Middle Ages to the Early Modern era. The territories were re-organized in the Duchy of Courland and Semigallia and the Duchy of Livonia, the latter competing with the Kingdom of Livonia during the war. After its reconquest, Sigismund's successor Stephen Báthory…
Double-Denar with monogram of Grand Duke Stephen Báthory and the coat of arms of Lithuania, minted in Mitau, 1578
Coin of the Duchy of Courland and Semigallia with portrait of Ernst Johann von Biron, coat of arms of Poland and the coat of arms of Lithuania, 1764
Jelgava Palace, the main residence of the dukes