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Janusz Radziwiłł
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Janusz Radziwiłł

Polish prince
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Janusz Radziwiłł was a prominent Polish prince and a key figure in the Radziwiłł family, an influential Polish-Lithuanian noble house. He was a leading Calvinist and a significant magnate in Lithuania.12

In the mid-17th century, during the Swedish invasion of the Polish-Lithuanian Commonwealth, Janusz Radziwiłł broke the union with Poland and allied with Sweden. His motivations were a complex mix of Lithuanian and Protestant interests, alongside personal ambition to rule the Grand Duchy of Lithuania. This alliance was a significant event during the period of Swedish occupation.2

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
5 Britannica Sources
  1. Radziwiłł family
  2. Stanisław Wojciechowski
  3. history of Poland - The rule of Jagiełło
  4. Poland - John II Casimir Vasa
  5. Piast Dynasty

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