Question: Which country Hedvig Elisabeth Charlotte Of Holstein-Gottorp's mother is from?

Knowledge 1: Hedvig Elisabeth Charlotte of Holstein-Gottorp
Hedwig Elisabeth Charlotte of Holstein-Gottorp (22 March 1759 – 20 June 1818) was Queen of Sweden and Norway as the wife of King Charles XIII and II.She was also a famed diarist, memoirist and wit.She is generally known in Sweden by her full pen name in Swedish (above), though her official name as queen was Charlotta.She was born in Eutin the daughter of Duke Frederick AugustI of Holstein-Gottorp and Princess Ulrike Friederike Wilhelmine of Hesse-Kassel.She grew up in Eutin and married her cousin Charles, Duke of Södermanland, in Stockholm on 7 July 1774 when she was fifteen years old.The marriage was arranged by King Gustav III to provide the throne of Sweden with an heir.The King had not consummated his marriage and had decided to give the task of providing an heir to the throne to his brother. [SEP] Knowledge 2: Princess Ulrike Friederike Wilhelmine of Hesse-Kassel
Princess Ulrike Friederike Wilhelmine of Hesse-Kassel  (31 October 1722, Kassel – 28 February 1787, Eutin) was a member of the House of Hesse-Kassel by birth, and of the House of Holstein-Gottorp through her marriage to Frederick AugustusI, Duke of Oldenburg.Ulrike was the Duchess consort of Oldenburg from 1774 until her husband's death on 6 July 1785.
Knowledge 1: 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. [SEP] Knowledge 2: 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".
Knowledge 1: Hedvig Elisabeth Charlotte of Holstein-Gottorp
Hedwig Elisabeth Charlotte of Holstein-Gottorp (22 March 1759 – 20 June 1818) was Queen of Sweden and Norway as the wife of King Charles XIII and II.She was also a famed diarist, memoirist and wit.She is generally known in Sweden by her full pen name in Swedish (above), though her official name as queen was Charlotta.She was born in Eutin the daughter of Duke Frederick AugustI of Holstein-Gottorp and Princess Ulrike Friederike Wilhelmine of Hesse-Kassel.She grew up in Eutin and married her cousin Charles, Duke of Södermanland, in Stockholm on 7 July 1774 when she was fifteen years old.The marriage was arranged by King Gustav III to provide the throne of Sweden with an heir.The King had not consummated his marriage and had decided to give the task of providing an heir to the throne to his brother. [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.

Answer: Oldenburg