Overview
Frederick I (Danish and ; ; ; 7 October 1471 – 10 April 1533) was King of Denmark and Norway. He was the last Roman Catholic monarch to reign over Denmark and Norway, when subsequent monarchs embraced Lutheranism after the Protestant Reformation. As king of Norway, Frederick is most remarkable in never having visited the country and was never crowned as such. Therefore, he was styled King of Denmark, the Vends and the Goths, elected King of Norway. Frederick's reign began the enduring tradition of calling kings of Denmark alternatively by the names Christian and Frederick, which has continued up to the reign of the current monarch, Margrethe II.
Background
Frederick was the younger son of the first Oldenburg King Christian I of Denmark, Norway and Sweden (1426–81) and of Dorothea of Brandenburg (1430–95). Soon after the death of his father, the underage Frederick was elected co-Duke of Schleswig and Holstein in 1482, the other co-duke being his elder brother, King John of Denmark. In 1490 at Frederick's majority, both duchies were divided between the brothers.
In 1500, he had convinced his brother King John to conquer Dithmarschen. A great army was called from not only the duchies, but with additions from all of the Kalmar Union for which his brother briefly was king. In addition, numerous German mercenaries took part. The expedition failed miserably, however, in the Battle of Hemmingstedt, where one-third of all knights of Schleswig and Holstein lost their lives.
Reign
When his brother, King John died, a group of Jutish nobles had offered Frederick the throne as early as 1513, but he had declined, rightly believing that the majority of the Danish nobility would be loyal to his nephew Christian II. In 1523, Christian was forced by disloyal nobles to abdicate as king of Denmark and Norway, and Frederick took the throne of Denmark in 1523 and was elected king of Norway in 1524. It is not certain that Frederick ever learned to speak Danish. After becoming king, he continued spending most of his time at Gottorp, a castle and estate in the city of Schleswig.
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