The Treaty of Pyzdry was signed on 2 November 1390 between Władysław II Jagiełło, king of Poland and Wartislaw VII of Pomerania-Stolp (Duchy of Słupsk).
[1] The treaty, signed in Pyzdry, contained an oath of vassalage of Wartislaw to Jagiełło, the obligation to support the latter in the Polish-Teutonic War, and mutual trade alleviations for Pomeranian and Polish merchants.
[2] Wartislaw VII, who with his brothers was allied with the Teutonic Order before,[3] received the Polish castellany of Nakło and probably some adjacent areas as a fief.
[13] With respect to the discourse in Polish historiography, Branig and Buchholz (1997) say that however the treaty is interpreted, it did not have any significance for the future.
[14] During the Polish-Teutonic wars, the Pomeranian dukes changed sides between Poland and the knights very frequently.