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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.
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Mar 13, 2024 · Casimir I of Kuyavian (in Polish Kazimierz I Kujawski), the dynasty Piasts, was born around 1211 and died on 14 December 1267. It is the second son of Conrad I of Mazovia and Agafia, the daughter of Prince Sviatoslav of Vladimir-Volhynia.
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Casimir I of Kuyavia 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.
The Duchy of Kuyavia (Polish: Księstwo kujawskie; Latin: Ducatus Cuiaviensis) was a district principality in Central Europe, created in the course of the 13th century in the region of modern-day Kuyavia after the inheritance of the Kingdom of Poland in 1138 into partial duchies through the will and testament of Duke Bolesław III Wrymouth.
- Independent state
- Roman Catholic
Casimir I of Kuyavia 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. He was the second son of Konrad I of Masovia and his...
Casimir's son Duke Konrad I of Masovia in 1233 created the Duchy of Kuyavia for his second son Casimir I. When Casimir's elder brother Duke Bolesław I of Masovia died in 1248, he took the occasion and took Dobrzyń Land east of the Vistula River from the heritage of his younger brother Siemowit I.
Casimir I of Kuyavia (Polish: Kazimierz I kujawski) (c. 1211 – 14 December 1267), was a Polish prince member of the House of Piast, Duke of Kujawy since 1233, ruler over Ląd during 1239-1261, ruler over Wyszogród since 1242, Duke of Sieradz during 1247-1261, Duke of Łęczyca since 1247 and Duke of Dobrzyń since 1248.
