What is Grand Duchy of Oldenburg?
[[File:Oldenburg in the German Reich (1871).svg|thumb|right|200px|The state as shown in a map of the 'Deutsches Reich' (1871-1918) ..]] [[File:Wappen Deutsches Reich - Grossherzogtum Oldenburg.png|thumb|right|200px|The arms of the Grand Duchy.]] The '''Grand Duchy of Oldenburg''' was a state in Europe. It was in the area that today is [[Germany]]. It was created out of the smaller ''Duchy'' of Oldenburg. The state was created at the [[Congress of Vienna]] in [[1814]] but ceased to exist after the German Revolution in [[1918]]. The capital of the state was [[Oldenburg]]. The Grand ducal family lived at the ''Schloss Oldenburg'' in the capital. They had [[Counts, dukes and grand dukes of Oldenburg]] [[Category:Former states in Germany]] [[Category:Former monarchies of Europe]] [[Category:1814 establishments]] [[Category:1918 disestablishments in Germany]] [[Category:1810s establishments in Germany]] [[Category:States of the German Confederation|Oldenburg]] [[Category:States of the North German Confederation|Oldenburg]] [[Category:States of the German Empire|Oldenburg]]