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 Rus.
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, ruler over Rawa, Płock, Sochaczew, Gostynin, Płońsk and Wizna, since 1386 ...
Siemowit IV died on 21 January 1426 at Gostynin and was buried in the Ducal crypt at Płock Cathedral. ==Division of Masovia (1381–1426)== Siemowit IV (also known as Ziemowit IV) (b. ca. 1353/1356, d. January 21, 1426) was one of the Dukes of Masovia. His domain included the lands of Czersk, Rawa, Sochaczew, Płock and Gostynin.
Siemowit I Piast of Masovia, Duke of Masovia, Duke of Czersk, Duke of Sieradz, was born circa1213 to Konrad of Poland (c1188-1247) and Agafia of Rus (c1192-c1248) and died 23 June 1262 of unspecified causes. He married Pereyaslava Daniilovna of Halych (c1231-1283) 1248 JL . Notable ancestors includeCharlemagne (747-814), Alfred the Great (849-899). Ancestors are fromRussia, Ukraine, France ...
- Konrad of Poland (c1188-1247)
- 23 June 1262
- Agafia of Rus (c1192-c1248)
In 1429 Siemowit V attended at the Congress of Lutsk, where King Sigismund proposed the elevation of Vytautas as King of Lithuania. In the war which broke out in 1431 between Poland and Švitrigaila, the Dukes of Masovia chose the Polish side, and Siemowit V took the whole command over the Polish troops. The campaign was a great success and ...
Siemowit III Piast of Halych, Duke of Masovia, was born circa 1320 to Trojden I of Masovia (c1285-1341) and Maria Yuryevna of Halych (c1292-1341) and died 16 June 1381 of unspecified causes. He married Euphemia of Troppau (c1320-1352) 1335. He married Anna of Ziębice. Notable ancestors include Charlemagne (747-814), Alfred the Great (849-899), Hugh Capet (c940-996). Ancestors are from Russia ...
- 16 June 1381
- Anna of Ziębice
- Euphemia of Troppau (c1320-1352)
- Duke of Masovia
Siemowit I Ziemowit I Duke of Mazovia.PNG Siemowit I, Duke of Masovia by Jan Matejko Duke of Masovia Reign 1248–1262 Predecessor Bolesław I of Masovia Successor Konrad II of Masovia Born c. 1224/28 Died 23 June 1262 Spouse Pereyaslava of Halych Issue Konrad II of Masovia Bolesław II of Masovia Salomea House House of Piast Father Konrad I of ...
Siemowit I OF MASOVIA was born about 1215, son of Conrad I OF MASOVIA and Agafia OF RUS. He was married in the year 1248 to Pereyaslava OF GALICIA, they gave birth to 1 child. He died on June 23, 1262. This information is part of by on Genealogy Online.
- Pereyaslava OF GALICIA, Pereyaslava OF
Siemowit I of Masovia (Polish: Siemowit (Ziemowit) I mazowiecki) (c.1215-June 23, 1262 ) was a son of Konrad I of Masovia and his wife Agafia, daughter of Svyatoslav III Igorevich. Siemowit was: Duke of Czersk (1247-1248), Duke of Masovia (1248-1262) and Duke of Sieradz (1259-1260). He was a member of the House of Piast. Life
Siemowit was Duke of Warsaw and Liw (1310-1313). In 1313, he became the ruler of Duchy of Rawa. He was regent of Płock (1336-1340). Siemowit was the eldest son of Boleslaus II of Masovia and his first wife, Sophie, the daughter of Grand Duke Treniota of Lithuania. Life. Before his father died, Siemowit received the small regions of Warsaw and Liw.