House of Oldenburg

House of Oldenburg
House of Oldenburg
Country	List Russian Empire, Kingdom of Denmark, Kingdom of Norway, Kingdom of Sweden, Kingdom of Greece, United Kingdom, Grand Duchy of Oldenburg, Duchy of Saxe-Lauenburg, Duchy of Schleswig, Duchy of Holstein;
Founded	1101
Founder	Elimar I, Count of Oldenburg
Current head	Friedrich Ferdinand, Prince of Schleswig-Holstein
Final ruler	Denmark: Margrethe II (1972–2024) Russia: Nicholas II (1894–1917) Sweden: Charles XIII (1809–1818) Greece: Constantine II (1964–1973) Oldenburg: Friedrich August II (1900–1918) Schleswig, Holstein and Saxe-Lauenburg: Christian IX (1863–1864)
Titles	List Current: King of Norway; King of the United Kingdom; Former: King of Denmark; Emperor of Russia; King of Sweden; King of the Hellenes; King of Iceland; King of Livonia; Grand Duke of Oldenburg; Duke of Saxe-Lauenburg; Duke of Schleswig; Duke of Holstein; Duke of Oldenburg; Count of Oldenburg; ;
Deposition	Russia: February Revolution, 1917 Greece: 1974 Greek republic referendum, 1974 Oldenburg: German Revolution, 1918 Saxe-Lauenburg: Second Schleswig War, 1864 Schleswig and Holstein: Second Schleswig War, 1864
Cadet branches	List Augustenburg (extinct); Glücksburg; Danish Royal Family (currently cognatic); Norwegian Royal Family; Greek Royal Family; Mountbatten-Windsor; Holstein-Gottorp; Russian line; Swedish line (extinct); Grand ducal line; Danneskiold-Samsøe (illegitimate branch); ;

The House of Oldenburg is an ancient dynasty of German origin whose members rule or have ruled in Denmark, Iceland, Greece, Norway, Russia, Sweden, the United Kingdom, Livonia, Schleswig, Holstein, and Oldenburg. The current King of the United Kingdom and King of Norway are agnatic members of this house, meanwhile the King of Spain and King of Denmark are matrilineal members.

The dynasty rose to prominence when Count Christian I of Oldenburg was elected King of Denmark in 1448, of Norway in 1450 and of Sweden in 1457. The house then occupied the Danish throne continuously for 576 years until the abdication of Queen Margrethe II in 2024.

^ Genealogisches Handbuch des Adels, Fürstliche Häuser, Band XVII, "Oldenburg". C.A. Starke Verlag, 2004, pp. 44–50 (in German). ISBN 9783798008335.
^ Burke's Royal Families of the World, p. 60. ISBN 0-85011-023-8.

[1] Genealogisches Handbuch des Adels, Fürstliche Häuser, Band XVII, "Oldenburg". C.A. Starke Verlag, 2004, pp. 44–50 (in German). ISBN 9783798008335.

[2] Burke's Royal Families of the World, p. 60. ISBN 0-85011-023-8.

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House of Oldenburg

Country	List Russian Empire, Kingdom of Denmark, Kingdom of Norway, Kingdom of Sweden, Kingdom of Greece, United Kingdom, Grand Duchy of Oldenburg, Duchy of Saxe-Lauenburg, Duchy of Schleswig, Duchy of Holstein
Founded	1101; 923 years ago (1101)
Founder	Elimar I, Count of Oldenburg
Current head	Friedrich Ferdinand, Prince of Schleswig-Holstein^[1]^[2]
Final ruler	Denmark: Margrethe II (1972–2024) Russia: Nicholas II (1894–1917) Sweden: Charles XIII (1809–1818) Greece: Constantine II (1964–1973) Oldenburg: Friedrich August II (1900–1918) Schleswig, Holstein and Saxe-Lauenburg: Christian IX (1863–1864)
Titles	List Current: King of Norway King of the United Kingdom Former: King of Denmark Emperor of Russia King of Sweden King of the Hellenes King of Iceland King of Livonia Grand Duke of Oldenburg Duke of Saxe-Lauenburg Duke of Schleswig Duke of Holstein Duke of Oldenburg Count of Oldenburg
Deposition	Russia: February Revolution, 1917 Greece: 1974 Greek republic referendum, 1974 Oldenburg: German Revolution, 1918 Saxe-Lauenburg: Second Schleswig War, 1864 Schleswig and Holstein: Second Schleswig War, 1864
Cadet branches	List Augustenburg (extinct) Glücksburg Danish Royal Family (currently cognatic) Norwegian Royal Family Greek Royal Family Mountbatten-Windsor Holstein-Gottorp Russian line Swedish line (extinct) Grand ducal line Danneskiold-Samsøe (illegitimate branch)