The <a href="https://en.wikipedia.org/wiki/Council_of_Constance" id="mwIA" rel="mw:WikiLink" title="Council of Constance">Council of Constance</a>, called by <a href="https://en.wikipedia.org/wiki/Sigismund,_Holy_Roman_Emperor" id="mwIQ" rel="mw:WikiLink" title="Sigismund, Holy Roman Emperor">Emperor Sigismund</a>, a supporter of <a href="https://en.wikipedia.org/wiki/Antipope_John_XXIII" id="mwIg" rel="mw:WikiLink" title="Antipope John XXIII">Antipope John XXIII</a>, burns <a href="https://en.wikipedia.org/wiki/Jerome_of_Prague" id="mwIw" rel="mw:WikiLink" title="Jerome of Prague">Jerome of Prague</a> following a trial for <a href="https://en.wikipedia.org/wiki/Heresy_in_Christianity" id="mwJA" rel="mw:WikiLink" title="Heresy in Christianity">heresy</a>.