Person

Janusz Radziwiłł

1612–1655 · 17th century

Janusz Radziwiłł was a Lithuanian magnate, Calvinist leader and Grand Hetman of Lithuania. During the Russian and Swedish invasions of 1655 he signed the Union of Kėdainiai, placing the Grand Duchy of Lithuania under the protection of Charles X Gustav of Sweden. Branded a traitor by many, he died at Tykocin at the end of 1655 while besieged by loyal Lithuanian troops.

Cite this entry
APA
The Epoch Institute. (2026). Janusz Radziwiłł. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/janusz-radziwill
MLA
“Janusz Radziwiłł.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/janusz-radziwill. Accessed .
Chicago
The Epoch Institute. “Janusz Radziwiłł.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/janusz-radziwill.
Harvard
The Epoch Institute (2026) ‘Janusz Radziwiłł’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/janusz-radziwill (Accessed: ).

Last reviewed October 2026Random entry ↻