The Council of Constance was a Catholic ecumenical council, held from 1414 to 1418 in Konstanz.
- The council ended the Western Schism (1378-1417) — a split in the Catholic church that followed the restoration of the papacy to Rome (after nearly 70 years in Avignon), in which several men simultaneously claimed to be the true pope — by instating Pope Martin V.
- Among other things, the council condemned Czech theologian Jan Hus as a heretic and had him burned at the stake. Hus is a central figure in the city’s story, as his ideas anticipated the Protestant Reformation by a full century. In fact, Martin Luther famously said: “Ich bin ein Hussite” (I am a Hussite).