The union Eric of Pomerania was king of joined how many kingdoms under a single monarch?
Engelbrekt rebellion The Engelbrekt rebellion was a rebellion in 1434–1436 led by Swedish nobleman Engelbrekt Engelbrektsson against Eric of Pomerania, the king of the Kalmar Union. It resulted in the deposing of Eric as well as erosion of the union.
Casimir V, Duke of Pomerania Duke Casimir V of Pomerania (or, counting differently, Casimir VI; before 1380 – 13 April 1435) was a member of the House of Griffins and a Duke of Pomerania. He ruled in Pomerania-Stettin together with his brother Otto II from 1413 to 1428. After 1428, he ruled Pomerania-Stettin alone.