Casimir IV of Pomerania
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Casimir IV (Kazimierz IV in Polish, called by Polish historians Kaźko Słupski) 1351-1377 was a duke of Pomerania-Slupsk since 1374. Son of Boguslav V of Pomerania and Elżbieta - daughter of Casimir III of Poland.
He was a friend and partial successor of the king Casimir III of Poland, who made him senior of Dobrzyn, Bydgoszcz, Kruszwica, Zlotow and Walcz after his death in 1370.