Casimir I of Kuyavia
Member of the Piast dynasty
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... Wikipedia
Born: 1211
Died: December 14, 1267 (age 56 years), Inowrocław, Poland
Great-grandparents: Bolesław III Wrymouth, Salomea of Berg, Igor Svyatoslavich, and more
Children: Ziemomysł of Kuyavia, Władysław I Łokietek, Leszek II the Black, and more
Parents: Konrad I of Masovia and Agafia of Rus
Grandchildren: Casimir III the Great, Elizabeth of Poland, Queen of Hungary, Kunigunde of Poland, and more
Spouse: Euphrosyne of Opole (m. 1257–1267), Constance of Wrocław (m. 1239–1257), and Jadwiga (m. ?–1235)