Question: When was the man that Niels Andreas Vibe served as chamberlain for born?
Context: Emma Hartmann née Zinn (b. 22 August 1807, d. 6 March 1851) was a Danish composer who used the pseudonym Frederick H. Palmer to publish music.  She was born in Copenhagen, the daughter of J.Fr.  Zinn, and studied singing and piano with composer Andreas Peter Berggreen.  She married composer J.P.E. Hartmann in 1829 and became the mother of ten children.  Her song Emil Hartmann was also a composer, and her daughter Emma Sophie married Danish composer Niels W. Gade. Vibebukta is a bay at the shore of Nordaustlandet, Svalbard.  The bay is named after hydrographer Andreas Vibe.  It lies between Gustav Adolf Land and the glacier Bråsvellbreen.  The twenty nautical miles wide glacier front of Bråsvellbreen, between Vibebukta and Kervelbukta, exhibited a huge surge in the 1930s. Niels Andreas Thrap (2 October 1793 – 9 November 1856) was Norwegian civil servant and politician.  He was temporary Minister of Finance in 1852 and 1854, and temporary Minister of the Navy 1852-53. Henrik Arnold Thaulow Dedichen (23 March 1863 – 3 March 1935) was a Norwegian psychiatrist.  He was born in Modum.  He was a great-grandson of Niels Andreas Vibe and grandson of Heinrich Arnold Thaulow.  He was the father of children's writer Aimée Sommerfelt, and an uncle of Hans Heiberg. Brian A. Dixon (born April 19, 1980) is an American author, primarily of short fiction.  He was born in Connecticut.  His first published short story, "The McMillen Golf Penalty," was awarded the Shannon Searles Fiction Prize by "Connecticut Review" in 2002.  He has since published short fiction in a number of outlets in addition to work on plays and novels.  Dixon served as the editor of "Revelation" magazine, an independent literary magazine about the apocalypse. " Columbia & Britannia" (2009), an alternate history anthology edited by Brian A. Dixon and Adam Chamberlain, was nominated for the 2010 Sidewise Award for Alternate History.  Dixon and Chamberlain are also the editors of "Back to Frank Black" (2012), a volume of original essays and interviews celebrating Chris Carter's "Millennium". Fredrik Ludvig Andreas Vibe Aubert (28 January 1851 – 10 May 1913) was a Norwegian art historian. Nicoline Christine Hambro (née Harbitz; 1 January 1861 – 9 May 1926) was a Norwegian politician and proponent for women's rights.  She was born in Bergen; the daughter of Niels Andreas Harbitz and Elisabeth Christine Harbitz.  She married educator Edvard Isak Hambro in 1880, and was the mother of politician C. J. Hambro and educator Elise Hambro.  She took actively part in the administration of several contemporary political and social issues, such as welfare undertakings for female sailors and seamstresses, female police, homes for prostitutes, and pauperism.  She was also a member of the Bergen City Council.  She served as president of the Norwegian National Women's Council from 1916 to 1922.  In 1919 she translated a collection of the adventurous stories about Baron Munchausen into Norwegian language. Christian VIII (18 September 1786 – 20 January 1848) was the King of Denmark from 1839 to 1848 and, as Christian Frederick, King of Norway in 1814. Gregers Krabbe (12 January 1594 – 20 December 1655) was a Danish-born nobleman and landowner.  He was born in Jutland, a son of Niels Krabbe and Vibeke Ulfstand.  He was a brother-in-law of Niels Trolle and Niels Krabbe.  He served as Governor-general of Norway from 1651, and died at the Akershus Castle in Christiania in 1655. Niels Andreas Vibe (12 July 1759 – 9 September 1814) was a Norwegian military officer and civil and royal servant.  He served as County Governor of "Nordre Bergenhus Amt" from 1802 to 1811, as General War Commissioner of Norway from 1811 to 1814, and as chamberlain to King Christian Frederick of Norway from 1814.
Answer: 18 September 1786