ドイツ騎士団国
Several decades after the subjugation of the Old Prussians, Hohenstein Castle was erected from 1351 to colonize the Sasna lands at the behest of Günter von Hohenstein, Komtur of the Teutonic Knights at Osterode commandry. A parish church was mentioned for 1348. Grand Master Winrich von Kniprode granted the surrounding settlement town privileges according to Kulm law in 1359. Olsztynek became the seat of the local administration within the State of the Teutonic Order.