Grand Duchy of Oldenburg

Grand Duchy of Oldenburg
*Großherzogtum Oldenburg* (German)
Grand Duchy of Oldenburg Großherzogtum Oldenburg (German)
1815–1918
	Top: Flag (1815-1871); Bottom: Flag (1871–1918); Coat of arms; Coat of arms
	Anthem: Heil dir, o Oldenburg; ("Hail thee, o Oldenburg")
Status	State of the German Confederation (1815–48); State of the German Empire (1848-49); independet state (1849-1850); State of the German Confederation (1850–66); State of the North German Confederation (1867–71); Federal State of the German Empire (1871–1918);
Capital	Oldenburg
Religion	Evangelical Lutheran Church of Oldenburg
Government	Absolute monarchy (1815–1849); Constitutional monarchy (1849-1918)
Grand Duke
• 1815–1823	William I
• 1823–1829	Peter I
• 1829–1853	Augustus
• 1853–1900	Peter II
• 1900–1918	Frederick Augustus II
Staatsminister
• 1814–1842	Karl von Brandenstein (first)
• 1916–1918	Franz Friedrich Ruhstrat (last)
History
• Congress of Vienna	1815
• Proclamation of the German Empire	January 18, 1871
• German Revolution	November 9, 1918
Currency	Thaler; (until 1858); Vereinsthaler; (1858–1873); German Goldmark; (1873–1914); German Papiermark; (1914–1918);
Preceded by	Succeeded by
	First French Empire
	Duchy of Oldenburg
Free State of Oldenburg
Today part of	Germany

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, that consisted of three widely separated territories: Oldenburg, Eutin and Birkenfeld. It ranked tenth among the German states, had one vote in the Bundesrat, and three members in the Reichstag. Its ruling family, the House of Oldenburg, also came to rule in Denmark, Norway, Sweden, Greece, Russia and United Kingdom.