Second Council of Lyon

Wishing to end the Great Schism that divided the Catholic Church and Eastern Orthodoxy, Pope Gregory X sent an embassy to Michael VIII, who had reconquered Constantinople, and put an end to the remnants of the Latin Empire in the East. Gregory asked Latin despots in the East to curb their ambitions. Eastern dignitaries arrived at Lyon on 24 June 1274 and presented a letter from the Emperor. On 29 June 1274 (the Feast of Peter and Paul, patronal feast of the popes), Gregory celebrated Mass in St John's Church, where both sides took part. The Greeks read the Nicene Creed, with the Western addition of the Filioque clause sung three times. The council was seemingly a success but did not provide a lasting solution to the schism. The Emperor was anxious to heal the schism, but the Eastern clergy opposed the decisions of the council. Patriarch Joseph of Constantinople abdicated and was replaced by John Bekkos, a convert to the cause of union. In spite of a sustained campaign by Bekkos to defend the union intellectually and vigorous and brutal repression of opponents by Michael, the vast majority of Byzantine Christians remained implacably opposed to union with the Latin "heretics". Michael's death in December 1282 put an end to the union of Lyons. His son and successor Andronicus II repudiated the union in the Council of Blachernae (1285), and Bekkos was forced to abdicate, being eventually exiled and imprisoned under house arrest until his death in 1297. ==Plans for crusade==

The council drew up plans for a crusade (passagium generale) to recover the Holy Land, which was to be financed by a tithe imposed for six years on all the benefices of Christendom. The plans were approved, but nothing concrete was done. James I of Aragon wished to organise the expedition at once,but was opposed by the Knights Templar. The Franciscan friar Fidentius of Padua, who had experience in the Holy Land, was commissioned by the pope to write a report on the recovery of the Holy Land. Ambassadors of the Khan of the Tatars negotiated with the Pope, who asked them to leave Christians in peace during their war against Islam. to 16 Mongols to the council, which created a great stir, particularly when their leader underwent a public baptism. Among the embassy were David of Ashby and the clerk Rychaldus. According to one chronicler, "The Mongols came, not because of the Faith, but to conclude an alliance with the Christians". Abaqa's Latin secretary Rychaldus delivered a report to the council, which outlined previous European-Ilkhanid relations under Abaqa's father, Hulagu, where,after welcoming the Christian ambassadors to his court, Hulagu had agreed to exempt Latin Christians from taxes and charges in exchange for their prayers for the Qaghan. According to Richardus, Hulagu had also prohibited the molestation of Frankish establishments and committed to return Jerusalem to the Franks. Richardus told the assembly that even after Hulagu's death, Abaqa was still determined to drive the Mamluks from Syria. At the council, Pope Gregory promulgated a new Crusade to start in 1278 in liaison with the Mongols. The Pope put in place a vast program to launch the Crusade, which was written down in his "Constitutions for the zeal of the faith". The text put forward four main decisions to accomplish the Crusade: the imposition of a new tax during three years, the interdiction of any kind of trade with the Saracens, the supply of ships by the Italian maritime Republics and the alliance of the West with Byzantium and the Il-Khan Abagha. However, despite papal plans, there was little support from European monarchs, who at this point were more likely to give lip service to the idea of a Crusade than to commit actual troops. The Pope's death in 1276 put an end to any such plans, and the money that had been gathered was instead distributed in Italy. ==Other topics debated==

The council dealt with the reform of the Church regarding which Gregory had sent out inquiries. Several bishops and abbots were deposed for unworthiness. The council restated the Ne Nimium decree of the Fourth Lateran Council in 1215, which suppressed all religious orders founded since. This hit the mendicant orders especially hard, with the Sack Friars and Pied Friars ceasing to exist. On the other hand, the two new orders of Dominicans and Franciscans were approved, and the Augustinian Friars were put in a reserved status, probably on the influence of their cardinal protector Riccardo Annibaldi. There had been several lengthy vacancies of the Holy See, most recently the sede vacante that had lasted from the death of Clement IV, 29 November 1268, until Gregory's election, 1 September 1271. The council decided that in future the cardinals should not leave the conclave until they had elected a pope. This decision was suspended in 1276 by Pope Adrian V and then revoked by Pope John XXI. It has since been re-established and is the basis of present legislation on papal elections. Finally, the council dealt with the Imperial throne, which Alfonso X of Castile claimed. His claim was disallowed by the Pope, and Rudolph I was proclaimed King of the Romans and future emperor on 6 June 1274. ==See also==