"Duke Casimir V of Pomerania (or, counting differently, Casimir VI; after 1380 – 13 April 1435) was a member of the House of Griffins and a ...
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Duke of Pomerania. He ruled in Pomerania-Stettin together with his brother Otto II from 1413 to 1428. After 1428, he ruled Pomerania-Stettin alone." - (en.wikipedia.org 12.06.2020)