Konge af Danmark ( ?.4.1375/6-3.8.1387)
König av Norge ( 1380-3.8.1387)
The old royal lines in all three Scandinavian kingdoms ended with the death of Olav IV. His mother, Margrete Valdemarsdatter, the only queen-regnant Norway has ever had, succeeded in forging the Kalmar Union, with her nephew as king of Norway, Sweden and Denmark. It was a consolidation of assets which long helped to protect the northern countries from Hansa domination, but it ended with the north divided into two camps: Denmark-Norway and Sweden-Finland.