Margarete of Rügen

In the early 1280s Bogislaw was involved in the war in the neighbouring margraviate of Brandenburg. At this time he married Mechtild, daughter of Johann I and a sister of reigning Margrave Otto IV, but all of his known children were by a second marriage to Magarete, daughter of Wizlaw II, Prince of Rügen. Their son Wartislaw IV would later rule in Western Pomerania and inherit Rügen. Their daughter Elisabeth of Pomerania (1291–1349) married Duke Eric I of Saxe-Lauenburg ca. 1318. Their daughter Euphemia of Pomerania married Christopher II of Denmark.