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Christian August of Holstein-Gottorp, Prince of Eutin
Christian August of Holstein-Gottorp, Prince of Eutin
	Christian August of Holstein-Gottorp, Prince of Eutin
Born	11 January 1673
Died	24 April 1726 (aged 53)
Spouse	Albertina Frederica of Baden-Durlach (m. 1704)
Issue	Adolf Frederick, King of Sweden; Frederick August of Eutin; Joanna Elisabeth; Georg Ludwig of Holstein-Gottorp
House	House of Holstein-Gottorp
Father	Christian Albert, Duke of Holstein-Gottorp
Mother	Princess Frederica Amalia of Denmark

Christian August of Holstein-Gottorp-Eutin (11 January 1673 – 24 April 1726) was a cadet of the reigning ducal House of Holstein-Gottorp who became prince of Eutin, prince-bishop of Lübeck and regent of the Duchy of Holstein-Gottorp.

He was the father of Adolf Frederick, King of Sweden, and the maternal grandfather of Catherine the Great, Empress of Russia.

Biography

He was a younger son of Christian Albert, Duke of Holstein-Gottorp and Princess Frederica Amalia of Denmark, daughter of King Frederick III of Denmark. His elder brother, Frederick IV, succeeded their father as ruler of the duchy, Christian August being given the small fiefdom of Eutin in 1695, whereupon he took the title Duke of Holstein-Eutin.^[1] Additionally, he was appointed coadjutor of Lübeck, a Lutheran Imperial state within the Holy Roman Empire, in 1701, and his family managed to have him elected as the bishop on 26 April 1706.^[1]

His eldest brother died in 1702, leaving only an underage son, Charles Frederick, Duke of Holstein-Gottorp, as his heir. From 1702 to 1708 Christian August was co-regent with his widowed sister-in-law, Hedvig Sophia of Sweden, for Charles Frederick, having been first installed as administrator under her authority.^[1] Upon her death in 1708, Christian August became sole regent of Holstein-Gottorp, which duchy was severely ravaged by the violence of the Great Northern War.

Marriage and issue

Christian August married his cousin Margravine Albertina Frederica of Baden-Durlach (3 July 1682 – 26 December 1755), on 2 September 1704, with whom he had ten children:^[1]

Hedwig Sophie Auguste of Holstein-Gottorp (9 October 1705 – 4 October 1764), Abbess of Herford, 1750–1764
Charles Augustus of Holstein-Gottorp (26 November 1706 – 31 May 1727), engaged to marry the future Elizabeth of Russia, but died before the wedding
Frederica Amalia of Holstein-Gottorp (12 January 1708 – 19 January 1782), a nun at Quedlinburg
Anne of Holstein-Gottorp (3 February 1709 – 2 February 1758), wed Prince Wilhelm of Saxe-Gotha-Altenburg (1701-1771), no issue. He was a brother of Augusta of Saxe-Gotha
Adolf Frederick of Holstein-Gottorp, King of Sweden (14 May 1710 – 12 April 1771). He was named crown prince of Sweden in 1743 and ascended the throne in 1751 as Adolf Frederick, King of Sweden.
Frederick August of Holstein-Gottorp, Duke of Oldenburg (20 September 1711 – 6 July 1785). He was initially bishop of Lübeck, and after his brother moved to Sweden, he inherited Eutin as well. In 1773, as part of a family agreement involving Denmark, Russia and Holstein-Gottorp, he also received a new duchy, Oldenburg, consisting of the counties of Oldenburg and Delmenhorst.
Johanna Elisabeth (24 October 1712 – 30 May 1760), wed Christian August, Prince of Anhalt-Zerbst, and became the mother of Catherine the Great, Empress of Russia.
William Christian of Holstein-Gottorp (20 September 1716 – 26 June 1719), died in infancy
Frederick Conrad of Holstein-Gottorp (12 March 1718 – 1719), died in infancy
Georg Ludwig of Holstein-Gottorp (16 March 1719 – 7 September 1763). His son Peter inherited the Duchy of Oldenburg from his childless cousin, the son of Frederick August

Christian August was succeeded by his eldest son Charles Augustus, who died before taking up the office, and then by his second son, Adolf Frederick.

Ancestry

Ancestors of Christian August of Holstein-Gottorp, Prince of Eutin

16. Adolf, Duke of Holstein-Gottorp

8. John Adolf, Duke of Holstein-Gottorp

17. Christine of Hesse

4. Frederick III, Duke of Holstein-Gottorp

18. Frederick II of Denmark (=24)

9. Augusta of Denmark

19. Sophie of Mecklenburg-Güstrow (=25)

2. Christian Albert, Duke of Holstein-Gottorp

20. Christian I, Elector of Saxony

10. John George I, Elector of Saxony

21. Sophie of Brandenburg

5. Marie Elisabeth of Saxony

22. Albert Frederick, Duke of Prussia

11. Magdalene Sibylle of Prussia

23. Marie Eleonore of Cleves

1. Christian August of Holstein-Gottorp, Prince of Eutin

24. Frederick II of Denmark (=18)

12. Christian IV of Denmark

25. Sophie of Mecklenburg-Güstrow (=19)

6. Frederick III of Denmark

26. Joachim Frederick, Elector of Brandenburg

13. Anne Catherine of Brandenburg

27. Catherine of Brandenburg-Küstrin

3. Frederikke Amalie of Denmark

28. William, Duke of Brunswick-Lüneburg

14. George, Duke of Brunswick-Lüneburg

29. Dorothea of Denmark

7. Sophie Amalie of Brunswick-Lüneburg

30. Louis V, Landgrave of Hesse-Darmstadt

15. Anne Eleonore of Hesse-Darmstadt

31. Magdalene of Brandenburg

Notes and references

^ ^a ^b ^c ^d Huberty, Michel; Giraud, Alain; Magdelaine, F. et B. (1994). L'Allemagne Dynastique, Tome VII Oldenbourg. France: Laballery. pp. 86–87, 111–112. ISBN 2-901138-07-1.

Religious titles
Christian Augustus House of Holstein-Gottorp Cadet branch of the House of Oldenburg Born: 11 January 1673 Died: 24 April 1726
Regnal titles
Preceded by August Frederick (Lutheran Administrator)	Prince-Bishop of Lübeck 1705–1726 (Lutheran Administrator)	Succeeded by Charles August (Lutheran Administrator)