Frederick, Hereditary Prince of Denmark was heir presumptive to the thrones of Denmark and Norway. He was the only surviving son of King Frederick V by his second wife, Juliana Maria of Braunschweig-Wolfenbüttel. Wikipedia
Born: October 11, 1753, Christiansborg Palace, Copenhagen, Denmark
Died: December 7, 1805 (age 52 years), Amalienborg, Copenhagen, Denmark
Grandchildren: Frederick VII of Denmark, Louise of Hesse-Kassel, Prince Frederick William of Hesse-Kassel, and more
Spouse: Duchess Sophia Frederica of Mecklenburg-Schwerin (m. 1774–1794)