Principality of Siewierz

Principality of Siewierz ( Latin: Ducatus Severiensis , Polish. Księstwo siewierskie ) is an administrative-territorial unit of the Kingdom of Poland and the Commonwealth . It existed in 1312 - 1795 .

Vassal Principality
Principality of Siewierz
polish Księstwo siewierskie lat Ducatus severiensis
Coat of arms
A country	Polish-Lithuanian Commonwealth
Included in	Crown of the Kingdom of Poland
Adm. center	Siewierz
Prince	( list )
History and Geography
Date of formation	1312 - 1795
Date of Abolition
Area	7660 km²
official languages	polish latin

The Siewierz Principality was located in Upper Silesia , the capital is the city of Siewierz . Originally formed as a inheritance allocated by the Bytom prince Casimir II to one of his sons; in 1341, the term "principality" was used for the first time in relation to these lands.

In December 1443, the Silesian prince Vaclav Tseshinsky sold his principality of Siewierz for 6 thousand hryvnias to the bishop of Cracow Zbigniew Olesnitsky , however, princes Mikulas V Krnovsky and Boleslav V Gusit opposed this deal, the dispute was settled only in 1453. Since that time, Siewierz Castle has become the seat of the Cracow bishops.

Formally, the first title of “Prince of Siewierz” was received by the Cracow bishop in 1484.

In 1790, the Four-year Seimas included the Principality of Siewierz in the Commonwealth as part of the . In 1795, after the Third Partition of the Polish-Lithuanian Commonwealth, Siewierz was annexed by the Prussian Kingdom and became part of the Prussian province of New Silesia . In 1807, the French emperor Napoleon Bonaparte separated the Principality of Siewierz from the vassal duchy of Warsaw and presented it to his Marshal Jean Lannes , Duke de Montebello. In 1815, the principality was finally liquidated and included in the Kingdom of Poland .