
Here's a complex question that requires someone to reason about the input, can you answer it?
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?


House of Pomerania dynasty
