Prince Jerzy Ossoliński h. Topór was a Polish nobleman (szlachcic), Crown Court Treasurer from 1632, governor (voivode) of Sandomierz from 1636, Reichsfürst since 1634, Crown Deputy Chancellor from 1639, Great Crown Chancellor from 1643, sheriff (starost) of Bydgoszcz (1633), Lubomel (1639), Puck and Bolim (1647), magnate, politician, statesman and diplomat. Famous for being extensively educated, he was a skillful politician and a persuasive public speaker.
Prince Ossoliński by Bartholomeus Strobel
Ossoliński Palace (left) and Kazanowski Palace (right) in Warsaw. They were both plundered and burned down by Swedes and Germans of Brandenburg in 1650s.
The Duchy of Prussia or Ducal Prussia 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.
The Prussian Homage (by Jan Matejko, 1882, National Museum, Kraków): Albert receives Ducal Prussia as a fief from King Sigismund I of Poland in 1525.
Image: CATECHISMVSA PR Asty Szadei (in Lithuanian language) by Martynas Mažvydas, published in Königsberg, 1547 (cropped)