confederation
association formed by Polish-Lithuanian szlachta (nobility), clergy, cities, or military forces in the Polish-Lithuanian Commonwealth
Prussian Confederation
organization of Prussian nobles in opposition to the Teutonic Order (1440-66)
Bar Confederation
historical confederation
rokosz
gathering of all the Polish szlachta (nobility), not merely of deputies, for a sejm
General Confederation of the Kingdom of Poland
confederation