king of the Danes (1439–48), Swedes (1441–48), and Norwegians (1442–48) whose reign saw a sharp decline in royal power as a result of commercial domination by the north German trading centres of the Hanseatic League and increasing political authority of the Danish and Swedish state councils.

The son of John, count of the Upper Palatinate (Germany), Christopher succeeded his maternal uncle Erik of Pomerania (Erik VII) as ruler of Denmark, Norway, and Sweden. Erik had been deposed in all three countries when dissident Swedish nobles opposed to his absolutist rule were supported by the Danish state council, which objected to the king's war against the Hanseatic League and the counts of Holstein. Christopher's accession restored peace and union in the three Scandinavian kingdoms.

Christopher quickly repressed a peasant rebellion in north Jutland (1441). He yielded, however, to the towns of the Hanseatic League and restored their commercial privileges in Scandinavia, despite the protests of Danish merchants. Denmark and Sweden came largely under the control of their councils of state, whereas Norway increasingly came under Danish domination. When Christopher died childless in 1448, the Scandinavian union was again dissolved.