Queen dowager
In January 1448, King Christopher died childless, which resulted in a succession crisis that immediately broke the Kalmar Union of the three Kingdoms. Queen dowager Dorothea, being the only royal in Denmark, was proclaimed interim regent of Denmark until a new monarch could be elected. In Sweden, however, the Lord High Constable was elected as King Charles VIII, who was soon elected king of Norway as well. In September, Christian of Oldenburg was elected monarch as Christian I of Denmark and the queen dowager turned over the power to him upon his election.