to the Holy Roman Empire and should not be regarded as casually as something separate from that. While this diplomatic correspondence appointed deadline to lift the siege of Wiener Neustadt had passed. On 17 August 1487 the city was handed over to Matthias peacefully. Thus on 14 October Matthias met with Albert, where a truce was agreed. Albert, no other means than only verbally supported and sometimes insulted by Emperor Frederick came to the decision – to the discontent of Frederick – to cease the war against Matthias on 12 December. They chose Pope Innocent VIII to bring justice to their dissension. Frederick put a veto on the agreement though the parties concerned it done. Aftermath Following the siege a truce was concluded by the Holy See mediator of Raimund Peraudi between Frederick and Matthias in 1488. Frederick agreed in a status quo because he was already busy with the Brugge Revolt in Flanders, in which his son Maximilian I was kept hostage by the citizens and his personal presence was needed to solve the situation. In the negotiation Matthias was represented by his Austrian sympathizer counts Christoph von Liechtenstein-Nikolsburg and Leopold Brantz. Matthias lifted the custom taxes of vine import for the Order of Saint George of Carinthia. Simultaneously Matthias reconquered the cities of Kismarton (Eisenstadt) and Fraknó (Forchtenstein), which in contrast Frederick – as bestow ruler assigned in Peace Treaty of Wiener Neustadt in 1463 – immediately gifted to the Order of Saint George to spark tensions. Siebenhirter on the other hand on 13 February 1488 waived his right to the villages and subsequently was granted the towns of Trautmannsdorf and Wartenstein in exchange by Matthias. He also successfully made this agreement ratified by Frederick on 30 April 1489. References Conflicts in 1486 Conflicts in 1487 Wiener Neustadt Wiener Neustadt Wiener Neustadt 1480s in the Holy Roman Empire 1486 in Europe 1487 in Europe Austrian–Hungarian War (1477–1488)