Sigismund Korybut

Sigismund Korybut (Lithuanian: Žygimantas Kaributaitis; Belarusian: Жыгімонт Карыбутавіч; Polish: Zygmunt Korybutowicz; Czech: Zikmund Korybutovič; Ukrainian: Жиґимонт Корибутович or Сигізмунд Корибутович, c. 1395 – 1435 near Vilkmergė) was a duke and knight from the Korybut dynasty, best known as a military commander of the Hussite army and a governor of Bohemia and Prague during the Hussite Wars.

His elder sister, Olena (Helena) had been married to an important magnate of Bohemian kingdom, John II, Duke of Opava-Ratibor.

However, he could not refuse an offer of the Bohemian throne and on 29 June 1424 he once again came to Prague with 1,500-strong army, this time without Vytautas' and Jogaila's consent; their primary objective had been a successful implementation of the Treaty of Melno, thus a conflict with Sigismund of Hungary was undesirable.

Meanwhile, as a governor of Prague, he dismissed the city's council, summoned a new one and succeed in ending the internal discords between Jan Žižka and the Utraquists, enabling a successful Hussite military campaign to Moravia against Emperor Sigismund.

After Žižka's death, he became a supreme commander of his army, leading it to victory in the Battle of Usti nad Labem on 16 June 1426.