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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 Masovian branch of the House of Piast and from 1373 or 1374 Duke of Rawa, and after the division of the paternal inheritance between him and his brother in 1381, ruler over Rawa ...
Apr 27, 2022 · January 21, 1426 [2]) was one of the Dukes of Masovia. His domain included the lands of Czersk, Rawa, Sochaczew, Płock and Gostynin. In 1381 he inherited Wisz and in 1387 Bełz. Siemowit IV was a son of Siemowit III. After the death of Ludwik Węgierski he was one of the pretenders to the Polish throne.
- Czersk, Mazowieckie
- Alexandra of Lithuania
- Mazowieckie
- "Ziemowit IV Młodszy"
Siemowit IV, Duke at Rawa and Płock (until 1426), also Duke of Belz from 1388. Since the Polish-Lithuanian Union of 1385, Masovia was localized between the joined Jagiellonian states. The Dukes of Masovia also ruled the Duchy of Belz until 1462.
- District principality
Siemowit IV, Duke of Masovia explained. 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 Masovian branch of the House of Piast and from 1373 or 1374 Duke of Rawa, and after the division of the paternal inheritance between him and his ...
Third son of Siemowit IV and Alexandra of Lithuania: 21 January 1426 – 25 July 1427 Duchy of Płock (in Płock proper) Unmarried: 25 July 1427 aged 23-24: Ladislaus I: 1406 Fourth son of Siemowit IV and Alexandra of Lithuania: 21 January 1426 – 12 December 1455: Anna of Oleśnica 1444 two children 12 December 1455 aged 50-51
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 – 1186Siemowit IV (also known as Ziemowit IV) (ca. 1353/1356 – 21 January 1426) was one of the Dukes of Masovia of the old Polish Piast royal family. His domain included the lands of Czersk, Rawa, Sochaczew, Płock and Gostynin. In 1381 he inherited Wisz and in 1387 Bełz.
About: 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 ...
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