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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. He was the second son of Konrad I of Masovia and Agafia of Rus.
- 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.
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Duchy of Masovia of Bolesław IV composed of Masovia and Eastern Kuyavia. 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
Dukes of Masovia in 1450. Duke of Masovia ( Polish: Książę Mazowsza) was a title borne by the sons and descendants of the Polish Duke Bolesław III Wrymouth. [1] 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 ...
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 – 1186Apr 18, 2024 · Bolesław I (born 966/967—died June 17, 1025) was the duke (from 992) and then (from 1024) first king of Poland, who expanded his country’s territory to include Pomerania, Lusatia, and, for a time, the Bohemian princely lands. He made Poland a major European state and also created a Polish church independent of German control.
- The Editors of Encyclopaedia Britannica
Nov 13, 2022 · As a result of the fragmentation of Poland after the death of Polish monarch Bolesław III Wrymouth, in 1138 the Duchy of Mazovia was established, and during the 12th and 13th centuries it joined temporarily various adjacent lands and endured invasions of Prussians, Yotvingians, and Ruthenians.
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.
