page_title: Sigismund, Holy Roman Emperor
section_title: Council of Constance
hierarchical_section_title: Sigismund, Holy Roman Emperor / Biography / Council of Constance
context_page_description: Sigismund of Luxembourg was prince-elector of Brandenburg from 1378 until 1388 and from 1411 until 1415, king of Hungary and Croatia from 1387, king of Germany from 1411, king of Bohemia from 1419, king of Italy from 1431, and Holy Roman emperor from 1433 until 1437, and the last male member of the House of Luxembourg.
  Sigismund was born in Nuremberg, the son of Holy Roman Emperor Charles IV and Elizabeth of Pomerania. He married Queen Mary of Hungary in 1385 and was crowned King of Hungary soon after. He fought to restore and maintain authority to the throne. Mary died in 1395, leaving Sigismund the sole ruler of Hungary.
  In 1396, Sigismund led the Crusade of Nicopolis, but was decisively defeated by the Ottoman Empire. Afterwards, he founded the Order of the Dragon to fight the Turks and secured the thrones of Croatia, Germany and Bohemia. Sigismund was one of the driving forces behind the Council of Constance that ended the Papal Schism, but which also led to the Hussite Wars that dominated the later period of his life. In 1433, Sigismund was crowned Holy Roman Emperor and ruled until his death in 1437.
context_section_description: From 1412 to 1423, Sigismund campaigned against the Venetians in Italy. The king took advantage of the difficulties of Antipope John XXIII to obtain a promise that a council should be called in Constance in 1414 to settle the Western Schism. He took a leading part in the deliberations of this assembly, and during the sittings made a journey to France, England and Burgundy in a vain attempt to secure the abdication of the three rival popes. The council ended in 1418, solving the Schism and — of great consequence to Sigismund's future career — having the Czech religious reformer, Jan Hus, burned at the stake for heresy in July 1415. The complicity of Sigismund in the death of Hus is a matter of controversy. He had granted him a safe-conduct and protested against his imprisonment; and Hus was burned during Sigismund's absence.
  When at one point during the council a cardinal corrected Sigismund's Latin, Sigismund replied Ego sum rex Romanus et super grammaticam ("I am king of the Romans and above grammar").Thomas Carlyle nicknamed Sigismund "Super Grammaticam".
  An alliance with England against France, and a failed attempt, owing to the hostility of the princes, to secure peace in Germany by a league of the towns, were his main acts during these years. Also, Sigismund granted control of the Margraviate of Brandenburg (which he had received back after Jobst's death) to Frederick I of Hohenzollern, burgrave of Nuremberg (1415). This step made the Hohenzollern family one of the most important in Germany.
  Sigismund began to shift his alliance from France to England after the French defeat at the Battle of Agincourt. The signing of the Treaty of Canterbury on 15 August 1416 culminated diplomatic efforts between Henry V of England and Sigismund and resulted in a defensive and offensive alliance against France. This, in turn, led the way to the resolution of the papal schism.
caption: Sigismund and Barbara of Celje at the Council of Constance.
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