King of Denmark and Norway born in the city of Copenhagen January 28, 1768 and died in the same city on December 3, 1839. He was son of Cristian VIIand Carolina Matilde.
Due to the insanity of his father, in 1784, was declared Regent of the Kingdom. At the death of his father, in 1808, he ascended the throne of both Crowns. July 31, 1790 he married with María Federica of Hesse-Cassel with whom he had eight children, none of whom came to survive his father.
The first years of the reign of Federico VI were overshadowed by the difficulty that the continental blockade. Denmark, after the attacks of the British Royal Navy to Copenhagen between 1801 and 1807, came into the war that was waged against Napoleon in Europe (see wars of the Coalition) in support of France. But the defeat of France in the war forced Denmark to negotiate the peace of Kiel in the year 1814, that had to give numerous territories, but the worst of this Treaty was the separation of the crowns of Denmark and Norway that had remained United for centuries and now passed to Swedish hands. Sweden, in return, gave the Lauenburg to Denmark. Federico became a part of the Germanic Confederation in 1815, because it held the title of Duke of Holsteim. This maneuver it meant to be in a more secure future in front of a potential conflict. He spent the last years of his reign to try to restore the prosperity of the country, broken by the continuous wars. In what refers to the domestic policy Federico VI responded to the demands of the Danish Liberals and in 1834 created four provincial diets and granted a greater freedom of the press, following the liberal current that prevailed in Europe after the revolts of the thirties of the 19th century.
Because of his death that he had no heirs, he was succeeded by his nephew Cristian VIII, which had been King of Norway in 1814 under the name of Cristian Federico.