Question: When was the father of Princess Juliane Sophie of Denmark born ?
Context: Princess Louise of Denmark ("Louise Caroline Josephine Sophie Thyra Olga") (17 February 1875 – 4 April 1906) was a Danish princess, the third child and oldest daughter of Frederick VIII of Denmark and his wife, Princess Louise of Sweden and Norway. Princess Sophie of Greece and Denmark (Greek: Πριγκίπισσα Σοφία της Ελλάδας και Δανίας ) (26 June 1914 – 3 November 2001) was the fourth child and youngest daughter of Prince Andrew of Greece and Denmark and Princess Alice of Battenberg.  The Duke of Edinburgh is her younger brother.  Sophie was born at Villa Mon Repos on the island of Corfu in Greece. Princess Vilhelmine Marie of Denmark and Norway (Danish: "Vilhelmine af Danmark" ; German: "Wilhelmine von Dänemark" ) (18 January 1808, Kiel, Duchy of Schleswig – 30 May 1891 in Glücksburg, Schleswig-Holstein, Prussia) was the youngest daughter of Frederick VI of Denmark and his wife and first cousin Marie Sophie of Hesse-Kassel.  Her paternal grandfather, Christian VII of Denmark, had major psychological problems and as result, her father had been acting as Regent since 1784.  Within two months of her birth, Vilhelmine Marie's grandfather died of a cerebral aneurysm and her father ascended as king.  At the time of her death, she was the last surviving grandchild of Christian VII. Princess Anna Sophie of Denmark (1 September 1647 – 1 July 1717) was the eldest daughter of King Frederick III of Denmark and Sophie Amalie of Brunswick-Lüneburg, and Electress of Saxony from 1680 to 1691 as the wife of John George III. Amalie Münster (1767–1814) was a Danish courtier, translator and poet.  She was a leading culture personality at the royal Danish court, where she was the lady in waiting of Princess Juliane Sophie of Denmark 1805-09 and then of Princess Caroline of Denmark, and an acquaintance of Baggesen and Oehlenschläger, whose poems she translated.  She published her own poems, «Amaliens poetische Versuche» (1796). Sara Runesten Petersen (born 8 May 1975) is a Denmark born female badminton player from New Zealand. Juliane Sophie (18 February 1788, in Copenhagen – 9 May 1850, in Copenhagen) was a Princess of Denmark, the daughter of Frederick, Hereditary Prince of Denmark, who himself was a younger son of king Frederick V of Denmark in his second marriage to queen Juliana Maria of Braunschweig-Wolfenbüttel. Frederick, Hereditary Prince of Denmark (Danish: "Frederik" ; 11 October 1753 – 7 December 1805) was heir presumptive to the thrones of Denmark and Norway.  He was the surviving son of King Frederick V by his second wife, Juliana Maria of Braunschweig-Wolfenbüttel. Princess Juliane Henriette Ulrike of Saxe-Coburg-Saalfeld (Coburg, 23 September 1781 – Elfenau, near Bern, Switzerland, 15 August 1860), also known as Grand Duchess Anna Feodorovna of Russia (Russian: Анна Фёдоровна ), was a German princess of the ducal house of Saxe-Coburg-Saalfeld (after 1826, the house of Saxe-Coburg-Gotha) who became the wife of Grand Duke Konstantin Pavlovich of Russia. Princess Louise Juliane of East Frisia (16 November 1657 in Aurich – 30 October 1715 in Hamburg) was the eldest daughter of Prince Enno Louis of East Frisia and his second wife Justine Sophie of Barby.
Answer: 11 October 1753