اتحاد كالمار
Eric of Pomerania, grand-grandchild of Danish king Valdemar IV in contrast became king of the Kalmar Union in 1397. Eric however failed in his most ambitious plan, to make Bogislaw IX Of Pomerania-Stolp king of both the Kalmar Union and the Polish–Lithuanian Commonwealth. Eric had to leave Denmark in 1449 and ruled Pomerania-Rügenwalde, a small partition of Pomerania-Stolp, until his death in 1459.