Grand Duchess of Oldenburg
| Grand Duchy of Oldenburg | ||||||||||
| Großherzogtum Oldenburg | ||||||||||
| State of the German Confederation, the North German Confederation, and the German Empire | ||||||||||
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Anthem "Hail to thee, O Oldenburg" |
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.svg) Oldenburg within the German Empire
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| Capital | Oldenburg | |||||||||
| Government | Constitutional monarchy | |||||||||
| Grand Duke | ||||||||||
| • | 1815–1823 | Peter Friedrich Wilhelm | ||||||||
| • | 1823–1829 | Peter I | ||||||||
| • | 1829–1853 | Augustus | ||||||||
| • | 1853–1900 | Peter II | ||||||||
| • | 1900–1918 | Frederick Augustus II | ||||||||
| • | 1814–1842 | Karl von Brandenstein | ||||||||
| • | 1916–1918 | Franz Friedrich Ruhstrat | ||||||||
| History | ||||||||||
| • | Congress of Vienna | 1815 | ||||||||
| • | German Revolution | 9 November 1918 | ||||||||
| Currency |
Thaler, (until 1858) Vereinsthaler, (1858–1873) German Goldmark, (1873–1914) German Papiermark (1914–1918) |
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| Today part of |
 Germany
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The Grand Duchy of Oldenburg (German: Großherzogtum Oldenburg) (also known as Holstein-Oldenburg) was a Grand Duchy within the German Confederation, North German Confederation, and German Empire, which consisted of three widely separated territories: Oldenburg, Eutin and Birkenfeld. It ranked tenth among the German states and had one vote in the Bundesrat of Germany and three members in the Reichstag.
Its ruling family, the House of Oldenburg, also came to rule in Denmark, Norway, Sweden, Greece and Russia. The heirs of a junior line of the Greek branch are, through Prince Philip, Duke of Edinburgh, in the line of succession to the thrones of the United Kingdom and the other Commonwealth realms after Queen Elizabeth II.
The first known count of Oldenburg was Elimar I (d. 1108). Elimar's descendants appear as vassals, though sometimes rebellious ones, of the dukes of Saxony; but they attained the dignity of princes of the empire when the emperor Frederick I dismembered the Saxon duchy in 1180. At this time, the county of Delmenhorst formed part of the dominions of the counts of Oldenburg, but afterwards it was on several occasions separated from them to form an appanage for younger branches of the family. This was the case between 1262 and 1447, between 1463 and 1547, and between 1577 and 1617.
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