Novák Ádám (szerk.): Fontes Memoriae Hungariae III. Varsóban őrzött magyar vonatkozású oklevelek, 1439–1489. Közreadja: Novák Ádám, Tóth Orsolya és Tóth Péter (Debrecen, 2019)
Sobiesław Szybkowski: Polish-Hungarian Relations between 1437 and 1490. A Short Introduction
XXIV these plans came to naught and in 1473 and 1474 Moldavia was invaded and destroyed by the Turks and the Tatars. It was not until his victory in the battle of Vaslui on 10 January 1475 that Stephen was able to push his enemies out of the country. Polish reinforcements did support him in this battle, but the troops sent by King Matthias were more numerous. As a result of this, the Moldavian ruler made a treaty with the King of Hungary on 12 July 1475. However, this was interpreted differently by each of the contracting parties. Stephen’s document only referred to a military alliance which barred Moldavia from participating in the conflict between Matthias and Poland. The document of the Hungarian side, on the other hand, treated the Moldavian ruler as a vassal of the Crown of St Stephen who was obliged to provide military help to Hungary and support its fight against all of its enemies. Following the treaty of 1475, King Matthias kept calling Stephen his vassal in his diplomatic correspondence. 78 Stephen did not cut ties with Poland. Actually, he sent a legation to Poland soon after making the treaty with Hungary. King Casimir Jagiellon was trying to stop the Ottoman invasion of Moldavia by using diplomatic means. However, actions taken by the Polish legation which arrived in Constantinople (Istanbul) in May 1476 were not successful and did not save Stephen the Great from war with Turkey. The Moldavian ruler was defeated, but thanks to military help from Hungary, after some time he managed to clear his country of the invaders. It needs to be emphasized that Casimir Jagiellon did not support Stephen in his conflict with the Turks openly, neither in 1476 (even though a legation was sent to Poland), nor in later years. Fearing that Moldavia could be drawn into the anti-Polish coalition which was then being formed by Matthias (see below), in 1479 the Polish monarch demanded that Stephen the Great should swear allegiance to him within six months. A Moldavian legation which appeared before Casimir in spring 1480 only asked him again to send reinforcements for the war against Turkey, but in the letter delivered to the Polish king the Moldavian ruler called him “his lord”. 79 During the rivalry over Bohemia a direction appeared in the relations between the Polish and Hungarian monarchs which had been virtually absent since the death of Emperor Sigismund in 1437. This was due to the fact that Matthias Corvinus, who was looking for allies against the Jagiellons, found political partners in Prussia. This country, pursuant to the Second Peace of Toruń of 1466, was divided into two parts. The Polish kings had direct authority over Pomerelia, the Chełmno Land, Malbork and Elbląg regions and also the Bishopric of Warmia. All these lands formed the so-called Royal Prussia. The 78 Czamańska, 1996. 135–140.; Kalous, 2009. 120.; Baczkowski, 2014. 147–148. 79 Czamańska, 141–144.