Duchy of Prussia

The Duchy of Prussia (German: Herzogtum Preußen, Polish: Księstwo Pruskie) 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.

Duchy of Prussia
Herzogtum Preußen  (German)
Prusy Książęce  (Polish)
1525–1701
The Duchy of Prussia (yellow)
StatusFief of Poland (to 1657)
Part of Brandenburg-Prussia (from 1618)
CapitalKönigsberg
Common languagesLow German, German, Polish, Lithuanian
Religion
Lutheranism[1]
Demonym(s)Prussian
GovernmentFeudal monarchy
Duke 
 1525–1568
Albert
 1568–1618
Albert Frederick
 1618–1619
John Sigismund
 1619–1640
George William
 1640–1688
Frederick William
 1688–1701
Frederick
LegislatureEstates
Historical eraEarly modern period
10 April 1525
1657
1701
Preceded by
Succeeded by
State of the Teutonic Order
Kingdom of Prussia
Today part ofLithuania
Poland
Russia

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