Question: What nationality is Adolf, Duke Of Holstein-Gottorp's father?

Knowledge 1: Adolf, Duke of Holstein-Gottorp
Adolf of Denmark or Adolf of Holstein-Gottorp (25 January 1526 – 1 October 1586) was the first Duke of Holstein-Gottorp from the line of Holstein-Gottorp of the House of Oldenburg.He was the third son of King Frederick I of Denmark and his second wife, Sophie of Pomerania.King Frederick I had his son educated by Philip I, Landgrave of Hesse.He spent four years at the Landgrave's castle in Kassel.In 1544, Adolf, his brother Johann, and their half-brother King Christian III of Denmark, divided the duchies of Schleswig and Holstein.The areas were divided according to approximately equal tax proceeds.Adolf, as the youngest, was entitled the first choice.Since he selected the part with the castle Gottorp, the line of the house Oldenburg created by him was called "Schleswig-Holstein-Gottorp". [SEP] Knowledge 2: Frederick I of Denmark
Frederick I (7 October 1471 – 10 April 1533) was the King of Denmark and Norway.His name is also spelled "Frederik" in Danish and Norwegian,
"Friedrich" in German and "Fredrik" in Swedish.He was the last Roman Catholic monarch to reign over Denmark, when subsequent monarchs embraced Lutheranism after the Protestant Reformation.As King of Norway, Frederick is most remarkable in never having visited the country and was never crowned King of Norway.Therefore, he was styled "King of Denmark, the Vends and the Goths, elected King of Norway".
Knowledge 1: Adolf, Duke of Holstein-Gottorp
Adolf of Denmark or Adolf of Holstein-Gottorp (25 January 1526 – 1 October 1586) was the first Duke of Holstein-Gottorp from the line of Holstein-Gottorp of the House of Oldenburg.He was the third son of King Frederick I of Denmark and his second wife, Sophie of Pomerania.King Frederick I had his son educated by Philip I, Landgrave of Hesse.He spent four years at the Landgrave's castle in Kassel.In 1544, Adolf, his brother Johann, and their half-brother King Christian III of Denmark, divided the duchies of Schleswig and Holstein.The areas were divided according to approximately equal tax proceeds.Adolf, as the youngest, was entitled the first choice.Since he selected the part with the castle Gottorp, the line of the house Oldenburg created by him was called "Schleswig-Holstein-Gottorp". [SEP] Knowledge 2: Christine of Hesse
Christine of Hesse (29 June 1543 – 13 May 1604) was Duchess consort of Holstein-Gottorp as the spouse of Duke Adolf of Holstein-Gottorp.She exerted some political influence as a widow after 1586.
Knowledge 1: Frederick I of Denmark
Frederick I (7 October 1471 – 10 April 1533) was the King of Denmark and Norway.His name is also spelled "Frederik" in Danish and Norwegian,
"Friedrich" in German and "Fredrik" in Swedish.He was the last Roman Catholic monarch to reign over Denmark, when subsequent monarchs embraced Lutheranism after the Protestant Reformation.As King of Norway, Frederick is most remarkable in never having visited the country and was never crowned King of Norway.Therefore, he was styled "King of Denmark, the Vends and the Goths, elected King of Norway". [SEP] Knowledge 2: Duchess Marie Elisabeth of Saxony
Duchess Marie Elisabeth of Saxony (22 November 1610 – 24 October 1684) was duchess consort of Holstein-Gottorp as the spouse of Duke Friedrich III of Holstein-Gottorp.

Answer: Norway