Question: In what year did the monarch whose flagship was called Griffen become king of Norway ?

Context paragraphs:
Tradus: Tradus was an online auction company operating in Central and Eastern Europe whose flagship Allegro was (and is) by far the most popular auction site in Poland.  In March 2008, the company was acquired by the South African media group Naspers.  Between 2015 and 2016 the brand Tradus vanished from Naspers´ classifieds portfolio for a few months.  But, it came back late in 2016, when Tradus.com was launched as a heavymachinery classifieds site by the OLX Group.  The site is based in Amsterdam.  Tradus.com lists ads for used, heavy machinery and vehicles in the felds of construction, transport, and farming, and also spare parts for such machines.

Todd Schnitt: Todd Andrew Schnitt (born January 24, 1966) is an American conservative talk radio host based in New York City.  He also does a morning show on 710 WOR.  He currently hosts "The Schnitt Show", the afternoon drive time show whose flagship is Tampa radio station 1250 WHNZ AM and is nationally syndicated by Compass Media Networks.  He also co-hosts a morning drive talk show on WOR New York with Len Berman.

Elite Matrimony: Elite Matrimony is an Indian matrimonial website that caters to wealthy individuals or their families seeking matrimonial alliances.  The site was founded by Murugavel Janakiraman who is located in Chennai.  EliteMatrimony matchmaking service fee ranges from 50,000 rupees to over rupees 2 lakh.  Its services are available to only those it formally invites to avail them.  The site offers 100% discreet and confidential service.  It belongs to Matrimony.com Ltd whose flagship brand is BharatMatrimony.  This site is seen as one that follows the trend of sites that cater to niche areas such as the overweight, those with AIDS, those who are manglik, those who don't want dowry, those with disabilities, those for whom it is a second marriage, or those who work for the government or with BPO companies.  The website offers services of dedicated staff who assist members in searching potential partners.  According to the Indian Express it is the first site of its kind.  The site was founded in 2008.

Choco-Story New York: Choco-Story New York: The Chocolate Museum and Experience with Jacques Torres is a museum of the history of chocolate-making.  It is associated with Jacques Torres Chocolate, a chocolate manufacturer, wholesaler and retailer whose flagship store is on the premises.

Gribshunden: Gribshunden or Griffen (English: "Griffin-Hound" or "Griffin"), also known by several variant names including Gribshund, Gripshunden, Gripshund, Griff, and Griffone, was a Danish warship, the flagship of John, King of Denmark (r. 1481–1513).  "Gribshunden" sank in 1495 after catching fire while in the Baltic Sea off the coast of Ronneby in southeastern Sweden; she is one of the best-preserved wrecks from the late medieval period.

Emperor: An emperor (through Old French "empereor" from Latin imperator) is a monarch, usually the sovereign ruler of an empire or another type of imperial realm.  Empress, the female equivalent, may indicate an emperor's wife ("empress consort"), mother ("empress dowager"), or a woman who rules in her own right ("empress regnant").  Emperors are generally recognized to be of a higher honour and rank than kings.  In Europe the title of Emperor has been used since the Middle Ages, considered in those times equal or almost equal in dignity to that of Pope, due to the latter's position as visible head of the Church and spiritual leader of the Catholic part of Western Europe.  The Emperor of Japan is the only currently reigning monarch whose title is translated into English as "Emperor".

Simhavishnu: Simhavishnu (Tamil: சிம்மவிஷ்ணு ), also known as Avanisimha (Tamil: அவனிசிம்மன் ), son of Simhavarman III and one of the Pallava kings of India, was responsible for the revival of the Pallavan dynasty.  He was the first Pallava monarch whose domain extended beyond Kanchipuram (Kanchi) in the South.  He was portrayed as a great conqueror in "Mattavilasa Prahasana" (drunken revelry), a drama written by his son Mahendravarman I.

Daily News – Antelope Valley: The Daily News – Antelope Valley was an edition of the Los Angeles Daily News, with offices in Palmdale, California.  At one time the publication was the area's second largest circulating daily newspaper.  It was owned by the Los Angeles Newspaper Group, whose flagship publication is the "Los Angeles Daily News".

John, King of Denmark: John (Danish and Norwegian: "Hans" ; Swedish: "Johan" ; né "Johannes") (2 February 1455 – 20 February 1513) was a Scandinavian monarch under the Kalmar Union.  He was King of Denmark (1481–1513), Norway (1483–1513) and as John II (Swedish: "Johan II" ) Sweden (1497–1501).  From 1482 to 1513, he was concurrently Duke of Schleswig and Holstein in joint rule with his brother Frederick.  He currently remains the only King of Denmark since the mid-15th century to not be named Christian or Frederick, if one does not include the current Queen of Denmark, Margrethe II.

Grand duchy: A grand duchy is a country or territory whose official head of state or ruler is a monarch bearing the title of grand duke or grand duchess.  Relatively rare until the abolition of the Holy Roman Empire in 1806, the term was often used in the official name of countries smaller than most continental kingdoms of modern Europe (e.g., Denmark, Spain, United Kingdom) yet larger than most of the sovereign duchies in the Holy Roman Empire, Italy or Scandinavia (e.g. Anhalt, Lorraine, Modena, Schleswig-Holstein).  During the 19th century there were as many as 14 grand duchies in Europe at once (a few of which were first created as exclaves of the Napoleonic empire but later re-created, usually with different borders, under another dynasty).  Some of these were sovereign and nominally independent (Baden, Hesse and by Rhine, Mecklenburg-Schwerin, Mecklenburg-Strelitz, Oldenburg, Saxe-Weimar and Tuscany), some sovereign but held in personal union with larger realms by a monarch whose grand-dukedom was borne as a subsidiary title (Finland, Luxembourg, Transylvania), some of which were client states of a more powerful realm (Cleves and Berg), and some whose territorial boundaries were nominal and the position purely titular (Frankfurt).

Supporting paragraphs: Gribshunden John, King of Denmark
Answer: 1483