State
Duchy of Oldenburg
historical duchy centred on Oldenburg in what is now north-western Germany
- This boundary
- 1774–1918
- Founded
- 1774
- Ended
- 1918
- Capital
- Oldenburg
- Languages
- German
- Preceded by
- County of Oldenburg
- Succeeded by
- Grand Duchy of Oldenburg
Overview
The Duchy of Oldenburg (German: Herzogtum Oldenburg), named for its capital, the town of Oldenburg, was a state in the north-west of present-day Germany.
On the death of Count Anthony Günther in 1667, the county of Oldenburg was inherited by King Frederick III of Denmark, a member of the Danish line of the House of Oldenburg. In 1773, the Treaty of Tsarskoye Selo transferred the county to Frederick August I of the junior Holstein-Gottorp branch. Subsequently, the county was elevated to a duchy.
After annexation by the French Empire in 1810, the duchy was restored as a grand duchy in 1815. Duke Peter I assumed the title of Grand Duke of Oldenburg in 1823.
All rulers (1)
- Frederick August I, Duke of Oldenburg1750–1785
Facts from Wikidata (CC0), HCED (CC0) and Cliopatria (CC BY 4.0); overview excerpted from Wikipedia (CC BY-SA 4.0).