Treaty of Bytom and Będzin

Treaty of Bytom and Będzin or Treaty of Będzin and Bytom (Polish: traktat bytomsko-będziński or traktat będzińsko-bytomski) was a treaty signed between the Polish–Lithuanian Commonwealth and the Austrian House of Habsburg on 9 March 1589. It was favorable to the Commonwealth.

In the course of War of the Polish Succession, Archduke Maximilian III of Austria was soundly defeated and taken prisoner by Polish chancellor and hetman, Jan Zamoyski, at the Battle of Byczyna in January 1588. Maximilan was treated with courtesy, but nonetheless found himself imprisoned in Commonwealth for over a year; first at Krasnystaw, than at Zamość. His lengthy captivity was a result of a political game played by chancellor Zamoyski, who treated him as useful leverage in international negotiations between Poland, Austria, Sweden and Russia.

Polish-Austrian negotiations were held in the Silesian border towns of Będzin and Bytom, with the Polish delegation staying on their respective sides of the border – Polish, in Będzin, and Habsburg, in Bytom. Polish delegation was represented by Hieronim Rozdrażewski, the bishop of Kujawy, Andrzej Opaliński, the grand marshal, Stanisław Gostomski, the voivode of Rawa, Janusz Ostrogski, the voivode of Volhynia, and Jan Zamoyski, the grand chancellor. Austrian negotiators included bishop Stanislav Pavlovský and burgrave William of Rosenberg. Another notable participant was Cardinal Ippolito Aldobrandini (future Pope Clement VIII), representing the Holy See at the Papal Legate, and acting as the mediator.

...
Wikipedia