Grand Duchy of Posen
| Grand Duchy of Posen | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Client state of Prussia | |||||||||
| 1815–1848 | |||||||||
The Grand Duchy of Posen in 1815 (aqua area in the west marked Wielkie Księstwo Poznańskie) | |||||||||
Map of the Grand Duchy of Posen (place of storage: State Archives in Poznań) | |||||||||
| Capital | Posen (Polish: Poznań) | ||||||||
| Area | |||||||||
| • Coordinates | 52°24′N 16°55′E / 52.400°N 16.917°E | ||||||||
• 1848 | 28,951 km2 (11,178 sq mi) | ||||||||
| Population | |||||||||
• 1848 | 1,350,000 | ||||||||
| Government | |||||||||
| • Type | Absolute monarchy | ||||||||
| Grand Duke | |||||||||
• 1815–1840 | Frederick William III | ||||||||
• 1840–1848 | Frederick William IV | ||||||||
| Governor | |||||||||
• 1815–1830 | Antoni Radziwiłł | ||||||||
• 1830–1841 | Eduard von Flottwell | ||||||||
• 1841–1848 | Adolf von Arnim-Boitzenburg | ||||||||
| Legislature | Sejm | ||||||||
| History | |||||||||
| 9 June 1815 | |||||||||
| 19 March 1848 | |||||||||
| 5 December 1848 | |||||||||
| |||||||||
| Today part of | Poland | ||||||||
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The Grand Duchy of Posen (German: Großherzogtum Posen; Polish: Wielkie Księstwo Poznańskie) was part of the Kingdom of Prussia, created from territories annexed by Prussia after the Partitions of Poland, and formally established following the Congress of Vienna in 1815. On 9 February 1849, the Prussian administration renamed the grand duchy the Province of Posen. Its former name was unofficially used afterward for denoting the territory, especially by Poles, and today is used by modern historians to refer to different political entities until 1918. Its capital was Posen (Polish: Poznań). The title of Grand Duke of Posen remained until 1918 to the King of Prussia.