Friedrich August, Duke of Holstein

Holstein

Holstein is the region between the rivers Elbe and Eider. It is part of Schleswig-Holstein, the northernmost state of Germany....

-Oldenburg

Oldenburg

Oldenburg is an independent city in Lower Saxony, Germany. It is situated in the western part of the state between the cities of Bremen and Groningen, Netherlands, at the Hunte river. It has a population of 160,279 which makes it the fourth biggest city in Lower Saxony after Hanover, Braunschweig...

(Gottorp

Gottorp

Gottorf Castle is a castle and estate in the city of Schleswig, Schleswig-Holstein, Germany. It is the ancestral home of the Holstein-Gottorp branch of the House of Oldenburg...

, Schleswig, 20 September 1711 – Oldenburg

Oldenburg

Oldenburg is an independent city in Lower Saxony, Germany. It is situated in the western part of the state between the cities of Bremen and Groningen, Netherlands, at the Hunte river. It has a population of 160,279 which makes it the fourth biggest city in Lower Saxony after Hanover, Braunschweig...

, 6 July 1785) was the son of Christian August, Duke of Holstein-Gottorp

Christian August of Holstein-Gottorp, Prince of Eutin

Prince Christian August of Holstein-Gottorp was Duke of Slesvig-Holstein, prince regent of Eutin, prince-bishop of Lübeck and regent of the duchy of Holstein-Gottorp....

 and his wife Margravine Albertine Friederike

Albertina Frederica of Baden-Durlach

Margravine Albertina Frederica of Baden-Durlach was a German princess. She was the daughter of Frederick VII, Margrave of Baden-Durlach and his wife Duchess Augusta Marie of Holstein-Gottorp. She married Christian August of Holstein-Gottorp, Prince of Eutin.- Biography :In 1726, her husband died,...

 of Baden-Durlach.

Marriage and issue

Frederick Augustus married Princess Ulrike Friederike Wilhelmine of Hesse-Kassel

Princess Ulrike Friederike Wilhelmine of Hesse-Kassel

Princess Ulrike Friederike Wilhelmine of Hesse-Kassel was a member of the House of Hesse-Kassel by birth, and of the House of Holstein-Gottorp through her marriage to Frederick Augustus I, Duke of Oldenburg...

 (or Hesse-Cassel;) the couple had three children:

• Peter Friedrich Wilhelm, Duke of Oldenburg
  Wilhelm, Duke of Oldenburg
  Peter Friedrich Wilhelm, Duke of Oldenburg, Wilhelm succeeded his father, Frederick Augustus I, Duke of Oldenburg as the Duke of Oldenburg in 1785. Wilhelm's mother was Princess Ulrike Friederike Wilhelmine of Hesse-Kassel.The title became a Grand Duke in 1815, but Wilhelm never used the elevated...
  
   (born 3 January 1754)
• Luise of Holstein-Gottorp-Oldenburg (born 2 October 1756)
• Hedwig Sophie Charlotte of Holstein-Gottorp-Oldenburg (born 22 March 1759)

Titular History

Empress Catherine the Great of Russia, on behalf of her son Paul of Russia, last of the Dukes of Holstein-Gottorp

Holstein-Gottorp

Holstein-Gottorp or Schleswig-Holstein-Gottorp is the historiographical name, as well as contemporary shorthand name, for the parts of the duchies of Schleswig and Holstein that were ruled by the dukes of Schleswig-Holstein-Gottorp. Other parts of the duchies were ruled by the kings of Denmark. The...

 ceded the Duchy

Duchy

A duchy is a territory, fief, or domain ruled by a duke or duchess.Some duchies were sovereign in areas that would become unified realms only during the Modern era . In contrast, others were subordinate districts of those kingdoms that unified either partially or completely during the Medieval era...

 lands to Denmark

Denmark

Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark...

. In exchange, Denmark ceded the Duchy of Oldenburg to the Prince Bishops of Lübeck, a cadet branch of the Dukes of Gottorp. Thus, Friederich August of Holstein-Gottorp, Prince Bishop of Lübeck, became Duke of Oldenburg.

His son and heir apparent

Heir apparent

An heir apparent or heiress apparent is a person who is first in line of succession and cannot be displaced from inheriting, except by a change in the rules of succession....

, Peter Friedrich Wilhelm, succeeded him as Wilhelm I, Duke of Oldenburg.

Ancestry