Frederikke Dannemand was the royal mistress of which King?
Frederick VI of Denmark Frederick VI (Danish and Norwegian: "Frederik"; 28 January 17683 December 1839) was King of Denmark from 13 March 1808 to 3 December 1839 and King of Norway from 13 March 1808 to 7 February 1814. From 1784 until his accession, he served as regent during his father's mental illness and was referred to as the "Crown Prince Regent" ("kronprinsregent"). For his motto he chose "God and the just cause" (Danish: "Gud og den retfærdige sag" ) and since the time of his reign, succeeding Danish monarchs have also chosen mottos in the Danish language rather than the formerly customary Latin.
Christian, Prince-Elect of Denmark Christian (10 April 16032 June 1647) was Prince-Elect of Denmark since 1610 and Heir Apparent to the Throne of the Kingdom of Norway since 1603. Dying in 1647, he was succeeded by his younger brother, Prince Frederik.