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Casimir I of Kuyavia (Polish: Kazimierz I kujawski) (c. 1211 – 14 December 1267) was a Polish prince and a member of the House of Piast. He was Duke of Kujawy after 1233, ruler over Ląd from 1239-1261, ruler over Wyszogród after 1242, Duke of Sieradz from 1247-1261, Duke of Łęczyca after 1247, and Duke of Dobrzyń after 1248.
Added: Oct 6, 2021. Find a Grave Memorial ID: 232752084. Source citation. Siemowit I of Masovia as 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 V of Masovia: He was a Duke of Rawa Mazowiecka, Płock, Sochaczew, Gostynin, Płońsk, Wizna and Belz during 1426-1434 jointly with his brothers, and after the division of the paternal inheritance between him and his brothers in 1434, sole ruler over Rawa Mazowiecka, Gostynin and Sochaczew. Wiki English.
Apr 27, 2022 · Trojden I of Masovia (1284 or 86 -13 March 1341) was a member of the House of Piast. He was Duke of Czersk from 1310. From 1336 to 1340 he was Regent the Duchy of Płock. He eventually became Duke of Masovia.
Jan 28, 2022 · 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.
He was the fifth son of Siemowit IV, Duke of Masovia and Alexandra of Lithuania, daughter of Algirdas. Life. His first appearance took place in March 1424, when along with his brothers Siemowit V, Casimir II and Trojden II, Władysław I attended the wedding and coronation of King Władysław II Jagiełło's third wife, Sophia of Halshany.
