Treaty of Vilnius (1561) in the context of Northern Wars

⭐ Core Definition: Treaty of Vilnius (1561)

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 non-Swedish part of Livonia, with the exception of the Free imperial city of Riga, subjected itself to the Grand Duke of Lithuania, Sigismund II Augustus with the Pacta subiectionis (Provisio ducalis). In turn, Sigismund granted protection from the Tsardom of Russia and confirmed the Livonian estates' traditional privileges, laid out in the Privilegium Sigismundi Augusti.

The secularization of 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 ignored the privileges of 1561, granted a new constitution and initiated Counter-Reformation. These measures were reversed after the Swedish conquest. When after a further series of wars Livonia capitulated to Russia in 1710, the Privilegium Sigismundi Augusti was confirmed by Peter the Great.

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Treaty of Vilnius (1561) in the context of Union of Grodno (1566)

The Union of Grodno established a real union between the Grand Duchy of Lithuania and the Duchy of Livonia on 25 December 1566, during the Livonian War. Livonia had submitted itself to Sigismund II Augustus by the Treaty of Vilnius (1561). Livonia's administrative division was re-organized with its castellans becoming members of the Lithuanian senate. The union did not impact Livonian jurisdiction, which was to be carried out according to its traditional customs.

View the full Wikipedia page for Union of Grodno (1566)

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