The Council of Basel (1431-1449) met to defend the faith and reform the Church. Its efforts to deal with Hussite heresy and reform the Roman Curia led to conflict with Pope Eugenius IV (1431-1447). The council divided over the site of a council of union with the Eastern churches. Some left to attend Eugenius' Council of Florence (1438-1443). While that council was negotiating reunion with Eastern churches, in 1439 Basel was acting to claim supremacy and depose Eugenius. The ensuing struggle went on for a decade before Basel and its pope, Felix V (Amadeus VIII of Savoy), gave up under pressure...