Nysa

Nysa was an ecclesiastical duchy in Silesia, ruled from Nysa by the bishops of Wrocław. Under Bohemian suzerainty since 1335, its bishop Nanker excommunicated King John of Bohemia in 1337.

Bishop Przecław enlarged the duchy by acquiring Grodków in 1344. Nysa repelled the Hussites in 1424 and endured three sieges during the Thirty Years' War. Prussian troops took the city in 1741; the Treaty of Breslau in 1742 divided the duchy between Prussia and Austrian Bohemia. The Prussian part was secularized in 1810.