Emperor Mathias died in March 1619, and Jesenius was arrested after the defeat of King Frederick of Bohemia by Emperor Ferdinand II in 1620 (Battle of White Mountain) and executed, along with 26 other Bohemian estates leaders, on the Old Town Square in 1621. See also Bohemian Revolt Notes References : Doktor Jesenius, Szlovákiai Szépirodalmi Könyvkiadó-Móra Ferenc Könyvkiadó, Bratislava(Pozsony)-Budapest, 1958. Ľudo Zúbek: Doktor Jesenius, Móra Ferenc Könyvkiadó, Budapest, 1966. Ruttkay László: Jeszenszky (Jessenius) János és kora 1566-1621, Semmelweis Orvostörténeti Múzeum és Könyvtár, Budapest, 1971. 1566 births 1621 deaths 16th-century Bohemian people 17th-century Bohemian people 17th-century Bohemian physicians Hungarian scientists Czech philosophers¨ Executed Slovak people Academic staff of Charles University Leipzig University alumni Expatriates in the Czech lands People from Austrian Silesia Physicians from Wrocław Jeszenszky family University of Padua alumni