Prince-Bishopric of Warmia
The Collegium Hosianum was the Jesuit collegium founded in 1565, 1566 by Polish Cardinal Stanislaus Hosius in Braunsberg (Braniewo), Kingdom of Poland. The town was then part of the Polish Prince-Bishopric of Warmia under rule of Cardinal Hosius. The Collegium Hosianum was one of the biggest Jesuit schools and one of the most important centres of Counter-Reformation in Europe and was particularly established to educate Catholic clergy of different countries.