"Swantibor III, Duke of Pomerania, or, according to a different way of counting, Swantibor I. (born: c. 1351 – died: 21 June 1413) was a member of ...
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the House of Griffins, a Duke of Pomerania-Stettin and for a while governor of the Mittelmark." - (en.wikipedia.org 19.10.2020)
