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Agafia of Rus. Siemowit I of Masovia ( Polish: Siemowit (Ziemowit) I mazowiecki) (d. 23 June 1262), was a Polish prince member of the House of Piast, Duke of Czersk during 1247–1248, Duke of Masovia (except Dobrzyń) during 1248–1262, ruler over Sieradz during 1259–1260. He was the sixth son of Konrad I of Masovia and his wife Agafia of ...
Jul 26, 2023 · Between 1207 and 1210 Konrad married Agafia of Rus, daughter of Prince Svyatoslav III Igorevich. They had the following children: 1.Boleslaw I of Masovia (c. 1210 - 17 April 1248), Duke of Masovia (1247—1248) 2.Casimir I of Kuyavia (born between 1210 and 1213 - died 14 Dec 1267) Prince of Kuyavia (1247–1267)
About Prince Henry of Masovia. Henry of Masovia, born between 1368 and 1370 in Rawa Mazowiecka was the youngest child of one of the Piast dynasty princes of Masovia, Siemowit III of Masovia, and his second wife, the princess of Ziębice, Anna (or Ludmiła, sources vary). His childhood was rather tragic, as described by several contemporary ...
Jul 30, 2022 · Siemowit III of Masovia (his name also rendered Ziemowit c.1320 1381) was a prince of Masovia and a coregent (with his brother Casimir I of Warsaw) of the lands of Warsaw, Czersk, Rawa, Gostynin and other parts of Masovia. Siemowit was the second son of Trojden I of Masovia and his wife Maria,
When Casimir III the Great died in 1370, under agreements concluded with one of his lifetime friends Siemowit III, he freed Siemowit from Polish suzerainty and gave Płock, Wizna, Wyszogród and Zakroczym back to Mazovia. Having a reunified Masovia, it regained its independence, there Siemowit III promulgates a customary law in 1377. He ...
Siemowit IV, Duke of Masovia. Siemowit IV (Ziemowit IV), also known as Siemowit IV the Younger (pl: Siemowit IV Młodszy; ca. 1353/1356 – 21 January 1426), was a Polish prince member of the House of Piast from the Masovian branch, from 1373/74 Duke of Rawa, and after the division of the paternal inheritance between him and his brother in 1381 ...
