Frederick II (1 July 1534 – 4 April 1588) was King of Denmark and Norway and Duke of Schleswig and Holstein  from 1559 until his death.  A member of the House of Oldenburg, Frederick began his personal rule of Denmark-Norway at the age of 24.
Frederick II (1 July 1534 – 4 April 1588), was the king of Denmark-Norway and duke of Schleswig from 1559 until his death. He was the son of King Christian III of Denmark and Norway and Dorothea of Saxe-Lauenburg. He is often seen as the typical Renaissance ruler of Denmark.
In the period 1982–1983, he was a boarder at École des Roches in Normandy, France. In 1986, Frederik graduated from the upper secondary school of Øregaard Gymnasium. In addition to Danish, he is fluent in French (his father's language), English, and German. In 1986 he began a course in Political Science at Aarhus University.
Frederick II, Frederik II or Friedrich II may refer to: Frederick II, Holy Roman Emperor (1194–1250), King of Sicily from 1198; Holy Roman Emperor from 1220. Frederick II of Denmark (1534–1588), king of Denmark and Norway 1559–1588. Frederick II of Prussia (1712–1786), king 1740–1786, better known as Frederick the Great.
Frederick II, (born July 1, 1534, Haderslev, Den.—died April 4, 1588, Antvorskov), king of Denmark and Norway (1559–88) who failed in his attempt to establish complete Danish hegemony in the Baltic Sea area in the Seven Years’ War of the North (1563–70) but maintained enough control over the Baltic trade to guide Denmark to a period of prosperity …
- The Editors of Encyclopaedia Britannica
Frederick III (Danish: Frederik; 18 March 1609 – 9 February 1670) was King of Denmark and Norway from 1648 until his death in 1670. He also governed under the name Frederick II as diocesan administrator (colloquially referred to as prince-bishop) of the Prince-Bishopric of Verden (1623–29 and again 1634–44), and the Prince-Archbishopric of Bremen (1635–45).