New Silesia

Neuschlesien was a small Prussian province, which consisted of an annexed during the Third Partition of Poland Polish district since 1795. She lay north-west of Kraków and south-east of Częstochowa.

It included the Duchy Sewerien or Siewierz, with its capital of the same name, which formerly was a part of Silesia. 1359 bought Primislaw Duke of Teschen City Sewer by the Duke Bolko of Schweidnitz and Mr. zu Fürstenberg for 2,500 marks from what buying the Emperor Charles IV confirmed yet in the same year. 1443, however, sold Duke Wenceslas of Teschen these lands for 6,000 Mark Prague groschen to the bishopric of Cracow, which, however, only three years afterward came to actual possession of Sewerien. Until the inclusion of the Duchy Sewerien as a circle in the Res Publica (nobility Republic of Lithuania - Poland) just before the last partition of Poland was the bishop of Krakow, perfect and unlimited ruler of the sovereign duchy. This included the right to ennoblement, the nobility being but was only within the limits of the duchy.

The province should be initially managed by Breslau, but in practice this was done out of South Prussia. Capital was Siewierz, which had been in her role as dukes of Siewierz previously the seat of the Bishops of Cracow. After the defeat of Prussia in the Fourth Coalition in 1807, the area was in the Peace of Tilsit, the Duchy of Warsaw.