Konrad I

duke of Mazovia

Also known as: Conrad of Mazovia

Learn about this topic in these articles:

association with Teutonic Order
- In Teutonic Order: Eastern Europe and Prussia.
  …was opening: a Polish duke, Conrad of Mazovia, with lands on the lower reaches of the Vistula River, needed help against the pagan Prussians.
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Poland
- In Poland: The arrival of the Teutonic Knights
  In 1226 Conrad of Mazovia called in the German crusading order, generally known as the Teutonic Order, provided them with a territorial base, and assumed that after a joint conquest of the Prussian lands (later known as East Prussia) they would become his vassals. The Teutonic Knights,…
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Prussia
- In Prussia
  …lands by the Polish duke Conrad of Mazovia for help against Prussian incursions. The Prussian countryside was subdued, castles were built for German nobility, and many German peasants were settled there to farm the land. By the middle of the 14th century, the majority of the inhabitants of Prussia were…
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