Traktat przymierza króla Eryka Pomorskiego i książąt Pomorza Zachodniego z zakonem krzyżackim w Prusach i Inflantach z 15 września 1423 roku
Peace treaty between king Eric of Pomerania and the dukes of the Western Pomerania on one side, and the Teutonic Knights from Prussia and Livonia of 15th September 1423

Summary/Abstract: The objective of the article was to show the circumstances in which the peace treaty was signed by Eric of Pomerania, the king of the Kalmar Union states, and the dukes of the Western Pomerania, with the Teutonic Knights in Prussia and Livonia on 15th September 1423. The issue was analysed in the context of the relationship of the Scandinavian sovereign with the Pomeranian dukes and the bishop of Kamień Pomorski, and at the same time it was examined as a manifestation of the attempts to integrate Pomeranian duchies under the leadership of Eric. Negotiations on the covenant were initiated in the summer of 1422 and finished one year later, during the Pomeranian stage of Eric’s journey to the Holy Land. The treaty stipulated mutual military assistance in the event of a threat to one of the parties. The treaty was directly aimed against Brandenburg and indirectly against Poland, bound by a treaty with Friedrich I, margrave von Zollern. It also reinforced the positions of Pomeranian duchies and of the Teutonic order against the Brandenburg ruler. Ultimately, none of the parties issued a ratification document, which, however, did not prevent further fruitful cooperation of the Teutonic Knights with king Eric in the second half of the 1420s.

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