Eric of Pomerania
It had been understood that Margaret should, at the first convenient opportunity, provide the three kingdoms with a king who was to be a kinsman of all the three old dynasties, although in Norway it was specified that she would continue ruling alongside the new king. In 1389 she proclaimed her great-nephew, Eric of Pomerania (grandson of Henry of Mecklenburg), king of Norway, having adopted him and his sister Catherine. In 1396, homage was rendered to him in Denmark and Sweden, while Margaret once again assumed the regency during his minority. To weld the united kingdoms still more closely together, Margaret summoned a congress of the three Councils of the Realm to Kalmar in June 1397, and on Trinity Sunday, 17 June, Eric was crowned King of Denmark, Norway and Sweden. The proposed Act of Union divided the three Councils, and the actual deed embodying its terms never got further than an unratified draft. Margaret balked at the clauses which insisted that each country should retain exclusive possession of its own laws and customs and be administered by its own dignitaries, because in her opinion this prevented the complete amalgamation of Scandinavia. With her usual prudence, however, she avoided every appearance of an open rupture.
A few years after the Kalmar Union, the 18-year-old Eric was declared of age and homage was rendered to him in all his three kingdoms, although Margaret was the effective ruler of Scandinavia throughout her lifetime.
Read more about this topic: Margaret I Of Denmark