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
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.
CATECHISMVSA PR Asty Szadei by Martynas Mažvydas, published in Königsberg, 1547
Albert of Prussia was a German prince who was the 37th grand master of the Teutonic Knights and, after converting to Lutheranism, became the first ruler of the Duchy of Prussia, the secularized state
Duchy of Prussia
…remained under the control of the State of the Teutonic Order until the Protestant Reformation in 1525. The duchy became the first Protestant state when Albert, Duke of Prussia formally adopted Lutheranism in 1525. It was inhabited by German, Polish (mainly in Masuria), and Lithuanian-speaking (mainly in Lithuania Minor…
Portrait by Lucas Cranach the Elder, 1528
As grand master of the Teutonic Order, painting from 1522
Groschen of the Grand Master of the Teutonic Order, Albert.
Prussian Homage: Albert and his brothers receive the Duchy of Prussia as a fief from Polish King Sigismund I the Old, 1525. Painting by Matejko, 1882.