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Casimir II and his older brother Siemowit V were formally named co-rulers. The first major challenge for Casimir II was the trip to Brest-Litovsk , where on 14 November 1425 he and his brother solemnly vowed to the crown his fidelity and acceptance in the recent controversy over the appointment of Stanisław z Pawłowic (former Chancellor of ...
Sep 7, 2023 · Boleslaus II of Mazovia died on April 20, 1313. In 1279 he married firstly to Sophia, the daughter of Grand Duke Treniota of Lithuania, they had the following children: 1. Siemowit II of Masovia, Duke of Masovia (1310–1345) 2. Trojden I of Masovia, Duke of Masovia, Czersk and Warsaw (1310–1341) 3.
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.
the text in this section is copied from an article in Wikipedia. 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 ...
May 11, 2023 · Language links are at the top of the page across from the title.
Date of birth: 1389 (statement with Gregorian date earlier than 1584) Date of death: 16 February 1442 Rawa Mazowiecka: Noble title
Siemowit VI of Płock (pl: Siemowit VI płocki; 2 January 1446 - 31 December 1461/1 January 1462), was a Polish prince member of the House of Piast from the Masovian branch. He was a Duke of Płock , Rawa Mazowiecka , Belz , Płońsk , Zawkrze and Wizna during 1455-1461/62 (under regency until 1459) jointly with his brother, since 1459 ruler ...