Teutonic Knights in Prussia (1240s)

Timeline

1. 1241–1242Samland (around Königsberg) · SamlandWith support from the Prussian bishoprics, the Teutonic Order expanded castles, accepted German settlers for cultivation, and launched raids and campaigns against native tribes still resisting, gradually turning Samland into a base for advancing inland.
2. 1243–1248Inland Prussian tribal lands · PrussiaJoint forces of the Order and the bishoprics continued advancing into tribal territories such as Pomesania and Nadruvia; the native tribes alternately submitted and rebelled, and the Order maintained control through castle-building, ransoms, and pressure to convert, though full conquest remained incomplete.
3. 1249Christburg (near Klaipėda) · Samogitian frontierThe Teutonic Order concluded the Treaty of Christburg with some Prussian tribal leaders, promising to preserve certain religious customs and tribal autonomy in exchange for allegiance and a truce, but colonization and taxation pressures made the treaty difficult to sustain long-term.