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Bolesław I of Masovia (Polish: Bolesław I Mazowiecki; 1208 – ca. 25 February 1248), was Polish prince member of the Polish House of Piast, Duke of Sandomierz (only a part) during 1229-1232, Duke of Dobrzyń during 1233-1247 and Duke over whole Masovia during 1247-1248.
- 1208
- Gertrude of Silesia, Anastasia Alexandrovna of Belz
- ca. 25 February 1248
- Piast dynasty
Bolesław I of Masovia ( Polish: Bolesław I Mazowiecki; 1208 – ca. 25 February 1248), was Polish prince member of the Polish House of Piast, Duke of Sandomierz (only a part) during 1229–1232, Duke of Dobrzyń during 1233-1247 and Duke over whole Masovia during 1247–1248. He was the second son of Konrad I of Masovia and Agafia of Rus.
European Kingdoms. Eastern Europe. Images and text copyright © all contributors mentioned on this page. An original king list page for the History Files. Coverage of the various historical cultures, rulers, and states of Europe.
Following the death of Duke Bolesław III Wrymouth in 1138, as specified by his testament, the Masovian province was governed by his second son Bolesław IV the Curly, who, after he had expelled his elder half-brother Władysław II, in 1146 became Duke of Poland.
- District principality
Duke of Masovia (Polish: Książę Mazowsza) was a title borne by the sons and descendants of the Polish Duke Bolesław III Wrymouth. In accordance with the last will and testament of Bolesław, upon his death his lands were divided into four to five hereditary provinces distributed among his sons, and a royal province of Kraków reserved for ...
RulerRulerBornReign1093 Ehingen Daughter of Henry, Count of ...28 October 1138 – 27 July 1144Duchy of Masovia (at Łęczyca)1122 Third son of Boleslaus III of Poland ...28 October 1138 – 5 January 1173Regency of Casimir II of Poland ...Regency of Casimir II of Poland ...Regency of Casimir II of Poland ...Regency of Casimir II of Poland ...1162 Son of Boleslaus IV of Poland and ...5 January 1173 – 1186Konrad I of Masovia invited the Teutonic Knights to help him fight the Baltic Prussian pagans, which led to centuries of Poland's warfare with the Knights and the German Prussian state. In 1320, the kingdom was restored under Władysław I the Elbow-high, then strengthened and expanded by his son Casimir III the Great.
Bolesław I of Masovia (Polish: '''Bolesław I Mazowiecki'''; 1208 – ca. 25 February 1248), was Polish prince member of the Polish House of Piast, Duke of Sandomierz (only a part) during 1229-1232, Duke of Dobrzyń during 1233-1247 and Duke over whole Masovia during 1247-1248.
