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?
Sentence (from "Charles IV, Holy Roman Emperor"): He was a member of the House of Luxembourg from his father's side and the House of Přemyslid from his mother's side, which he emphasised, because it gave him two saints as direct ancestors.
Relevant evidence: No