Duchy of Silesia

Duchy of Silesia Księstwo śląskie (Polish) Herzogtum Schlesien (German) Slezské knížectví (Czech)
1138–1335
Banner of arms Coat of arms
Silesia 1172–77: Fragmentation begins with Opole (green) and Racibórz (yellow) splitting off
Status	Province of Poland
Capital	Wrocław
Religion	Roman Catholic
Government	Feudal monarchy
Historical era	High Middle Ages
• Established	1138
• Duke Władysław II    exiled	1146
• Racibórz split off	1172
• Opole split off	1172
• Legnica split off	1248
• Incorporated by    Bohemia	1335
• Land of the    Bohemian Crown	1348
Preceded by Succeeded by Duchy of Poland Duchies of Silesia (Bohemian Crown) ∟Duchy of Racibórz ∟Duchy of Opole ∟Duchy of Legnica ∟Duchy of Brzeg Roman Catholic Archdiocese of Wrocław

The Duchy of Silesia (Polish: Księstwo śląskie, German: Herzogtum Schlesien, Czech: Slezské knížectví) with its capital at Wrocław was a medieval duchy located in the historic Silesian region of Poland. Soon after it was formed under the Piast dynasty in 1138, it fragmented into various Silesian duchies. In 1327, the remaining Duchy of Wrocław as well as most other duchies ruled by the Silesian Piasts passed to the Kingdom of Bohemia as Duchies of Silesia. The acquisition was completed when King Casimir III the Great of Poland renounced his rights to Silesia in the 1335 Treaty of Trentschin.