Duchy of Sandomierz

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Duchy of Sandomierz Ducatus Sandomirensis (Latin) Księstwo sandomierskie (Polish)
1138–1320
Coat of arms
Kingdom of Poland between 1304 and 1333, including Duchy of Sandomierz.
Status	Fiefdom of Kingdom of Poland
Capital	Sandomierz
Official languages	Polish, Latin
Religion	Roman Catholic
Government	District principality
Duke
• 1138–1146 (first, regency)	Władysław II the Exile
• 1146–1166 (first proper)	Henry of Sandomierz
• 1304–1320 (last)	Władysław I Łokietek
Historical era	High Middle Ages
• Testament of Bolesław III Wrymouth	1138
• Incorporation into Kingdom of Poland	1320
Preceded by Succeeded by Kingdom of Poland Kingdom of Poland Duchy of Wiślica

The Duchy of Sandomierz^[a] was a district principality and a fiefdom of the Kingdom of Poland. It was formed in 1138 from the territories of the Kingdom of Poland, following its fragmentation, that was started by the testament of Bolesław III Wrymouth. The Duchy existed until 1320 when it was incorporated into the Kingdom of Poland. Its capital was the city of Sandomierz. The territory was centred around Sandomierz Land in the southeastern corner of Poland, between the rivers of Pilica, Vistula, San, and Dunajec.
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