House of Oldenburg

From Wikipedia, the free encyclopedia
House of Oldenburg
Arms of the County of Oldenburg.svg
Country Grand Duchy of Oldenburg,Russian Empire, Kingdom of Denmark, Kingdom of Norway,Kingdom of Sweden, Kingdom of Greece, Duchy of Saxe-Lauenburg, Duchy of Schleswig-Holstein
Founded 1448
Founder Elimar I, Count of Oldenburg
Final ruler

Nicholas II of Russia (1894–1917)


Charles XIII of Sweden (1809–18)


Friedrich August II (1900–18)


Christian IX (1864)


Christian IX (1864)


Albert (1921–31)

Current head Christoph, Prince of Schleswig-Holstein

February Revolution 1917


1818 (line extinct)


Greek military junta of 1967–741973


German Revolution of 1918–191918


Second Schleswig War 1864


Second Schleswig War 1864


1931 (line extinct)

Cadet branches

The House of Oldenburg is a European royal house of North German origin. It is one of Europe’s most influential Royal Houseswith branches that rule or have ruled in Denmark, Greece, Norway, Russia, Sweden, Schleswig, Holstein, and Oldenburg. The current Queen of Denmark, the King of Norway and the ex-King of Greece as well as consorts of Greece and the United Kingdom belong to this House.

It rose to prominence when Count Christian I of Oldenburg was elected King of Denmark in 1448, Norway in 1450 and Sweden in 1457. The house has occupied the Danish throne ever since.


Marriages of medieval counts of Oldenburg had paved the way for their heirs to become kings of various Scandinavian kingdoms. Through marriage with a descendant of King Valdemar I of Sweden and of King Eric IV of Denmark, a claim to Sweden and Denmark was staked, since 1350.

At that time, its competitors were the successors of Margaret I of Denmark. In the 15th century, the Oldenburg heir of that claim married Hedwig of Schauenburg, a descendant of Euphemia of Sweden and Norway and also a descendant of Eric V of Denmarkand Abel of Denmark. Since descendants better situated in genealogical charts died out, their son Christian (the abovementioned) became the king of all three kingdoms of the whole Kalmar Union. The House of Mecklenburg was its chief competitor regarding the Northern thrones, and other aspirants included the Duke of Lauenburg. Different Oldenburgine branches have reigned in several countries. The House of Oldenburg was briefly poised to claim the British thrones through the marriage of Queen Anne and Prince George of Denmark and Norway; however, due to the early deaths of all their children, the crown passed to the House of Hanover.

The head of the house since 1980 is Christoph, Prince of Schleswig-Holstein.[1]

Main line[edit]

  • Kings of Denmark (1448–1863)
  • Kings of Norway (1450–1814)
  • Kings of Sweden (1457–64, 1497–1501 and 1520–21)
  • Counts, Dukes and Grand Dukes of Oldenburg (1101–1918)
  • Dukes of Schleswig and Counts of Holstein (1460–1544)
  • Dukes of Schleswig and Holstein ruling only part of the Duchies (1544–1721/1773)
  • Dukes of Schleswig (1721–1864) (ruling the entire Duchy)
  • Dukes of Holstein (1773–1864, ruling the entire Duchy)



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