Why was Frederick I only called "King of Denmark" while Christian III was named "King of Denmark and Norway"?
Frederick I of Denmark Frederick I (7 October 1471 – 10 April 1533) was the King of Denmark and Norway. His name is also spelled "Friedrich" in German, "Frederik" in Danish and Norwegian and "Fredrik" in Swedish. He was the penultimate Roman Catholic monarch to reign over Denmark, 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 being crowned King of Norway. Therefore he was styled "King of Denmark, the Vends and the Goths, elected King of Norway".
Coronation of the Danish monarch The coronation of the Danish monarch was a religious ceremony in which the accession of the Danish monarch was marked by a coronation ceremony. It was held in various forms from 1170 to 1840, mostly in Lund Cathedral in Lund, St. Mary's Cathedral in Copenhagen and in the chapel of Frederiksborg Palace in Hillerød.