Duchy of Prussia | |||||||||
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1525–1701 | |||||||||
Flag
(1525–1657) | |||||||||
Status | Fief of Poland (until 1657) Part of Brandenburg-Prussia (from 1618) | ||||||||
Capital | Königsberg 54°50′N 21°20′E / 54.833°N 21.333°E | ||||||||
Common languages | Low German, German, Polish, Lithuanian, Old Prussian | ||||||||
Religion | Lutheranism[1] | ||||||||
Demonym(s) | Prussian | ||||||||
Government | Feudal monarchy | ||||||||
Duke | |||||||||
• 1525–1568 | Albert | ||||||||
• 1568–1618 | Albert Frederick | ||||||||
• 1618–1619 | John Sigismund | ||||||||
• 1619–1640 | George William | ||||||||
• 1640–1688 | Frederick William | ||||||||
• 1688–1701 | Frederick | ||||||||
Legislature | Estates | ||||||||
Historical era | Early modern period | ||||||||
10 April 1525 | |||||||||
1657 | |||||||||
1701 | |||||||||
Area | |||||||||
• Total | 30,000 km2 (12,000 sq mi) | ||||||||
Currency | Thaler (1525-1701) | ||||||||
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Today part of | Lithuania Poland Russia |
The Duchy of Prussia (German: Herzogtum Preußen, Polish: Księstwo Pruskie, Lithuanian: Prūsijos kunigaikštystė) or Ducal Prussia (German: Herzogliches Preußen; Polish: Prusy Książęce) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until the Protestant Reformation in 1525.