Formulate an answer to this elaborate question: To satisfy what dynasty, did the Duchy of Pomerania get partitioned several times who was later granted as a whole and the Principality of Rügen as a fief to the dukes of both Pomerania-Stettin and Pomerania-Wolgast, by a King of Bohemia and the first King of Bohemia to also become Holy Roman Emperor?
Answer:
House of Pomerania dynasty