Bolesław I of Masovia
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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.
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Bolesław I | |
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Born | 1208 |
Died | ca. 25 February 1248 |
Noble family | Piast dynasty |
Spouse(s) | Gertrude of Silesia Anastasia Alexandrovna of Belz |
Father | Konrad I of Masovia |
Mother | Agafia of Rus |
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He was the second son of Konrad I of Masovia and Agafia of Rus. He was probably named after his great-grandfather, Bolesław III Wrymouth. The death of his older brother Przemysł in 1228 left him as the eldest surviving child of his family.