Pope Clement X (; ; 13 July 1590 – 22 July 1676), born Emilio Bonaventura Altieri, was head of the Catholic Church and ruler of the Papal States from 29 April 1670 to his death on 22 July 1676.
Emilio Bonaventura Altieri, born in Rome in 1590, belonged to the Papal nobility. He received a doctorate in law and held various positions within the Catholic Church, including Bishop of Camerino and Superintendent of the Papal Exchequer. At the age of almost 80, he was elected Pope Clement X in 1670 after a four-month-long conclave. As Pope, he canonized and beatified various saints, promoted good relations between Christian countries, and made efforts to preserve the Altieri family name by adopting the Paoluzzi family. He also established a new tax in Rome, which led to conflicts with ambassadors and cardinals. Clement X celebrated the fourteenth jubilee of the holy year in 1675 despite his old age. During his pontificate, he created 20 cardinals, including Pietro Francesco Orsini, who later became Pope Benedict XIII.
He suspended the Portuguese Inquisition's proceedings in October 1674, challenging the techniques employed against its main victims, the New Christians.
Early life
Emilio Bonaventura Altieri was born in Rome in 1590, the son of Lorenzo Altieri and Vittoria Delfin, a noble Venetian lady, sister of Flaminio Delfin, commander general of the Papal Army, and of Gentile Delfin, Bishop of Camerino. His brother was Cardinal Giambattista Altieri. The Altieri family belonged to the ancient Roman Papal nobility and had enjoyed the highest consideration at Rome for several centuries; they had occasionally contracted alliances with the Colonnas and the Orsinis. During earlier pontificates, the Altieri held many important offices and had been entrusted with several delicate missions.
Early work
Altieri received a doctorate in law from the Roman College in 1611. After finishing his studies, he was named auditor of Giovanni Battista Lancellotti in 1623, in the nuncio of Poland. He was ordained on 6 April 1624. On his return to Rome, he was named Bishop of Camerino, then governor of Loreto and of all Umbria. Pope Urban VIII (1623–44) gave him charge of the works designed to protect the territory of Ravenna from the unruly Po River.
All but one of the male scions of the Altieri family had chosen the ecclesiastical career. On his accession to the papacy, Clement X, in order to save the Altieri name from extinction, adopted the Paoluzzi family, and proposed that one of the Paluzzi should marry Laura Caterina Altieri, the sole heiress of the family. In exchange for adopting the Altieri surname, he would make one of the Paoluzzi a cardinal. Following the wedding, which he officiated, he appointed his niece's uncle-in-law Cardinal Paluzzi Altieri to the office of cardinal nephew to take on the duties which he was prevented from doing by age. The main activity was to invest the Church's money, and with advancing years gradually entrusted to him the management of affairs, to such an extent that the Romans said he had reserved to himself only the episcopal functions of benedicere et sanctificare, resigning in favour of the cardinal the administrative duties of regere et gubernare.
He beatified Pope Pius V (1566–72), Francis Solano, and John of the Cross, all subsequently canonized by Clement XI and Pope Benedict XIII (1724–30). Clement X also declared Venerable one of the famous Spanish mystics, Sister María de Jesús de Ágreda.
Clement X, on 24 November 1673, beatified nineteen Martyrs of Gorkum, who had been taken prisoner at Gorcum, the Netherlands, and put to death in Brielle on 9 July 1572, in hatred of the Catholic faith, of the primacy of the Pope, and of the Roman Church. Of the nineteen Gorcum martyrs, Peter Ascanius (Peter of Assche) and Cornelius Vican (Cornelius van Wijk) were laymen; eleven were Franciscan priests; one a Dominican, two Premonstratensians, one a regular canon of Saint Augustine, and four were secular priests.
On 13 January 1672, Clement X regulated the formalities to be observed in removing the relics of saints from sacred cemeteries. No one was to remove such relics without the permission of the cardinal-vicar. They were not to be exposed for the veneration of the faithful unless previously examined by the same cardinal. The principal relics of the martyr – that is to say, the head, the legs, the arms, and the part in which they suffered – were to be exposed only in the churches, and they were not to be given to private persons, but only to princes and high prelates; and even to them but rarely, lest the too great profusion should deprive relics of the respect which they ought to inspire. The Pope decreed severe penalties against all who gave a relic any name but that given by the cardinal-vicar. The pain of excommunication was pronounced against all who should demand any sum whatever for sealed and authentic relics. These decrees, and others made by preceding Popes were confirmed by Pope Clement XI (1700–21) in 1704.
Clement X confirmed the exemptions granted by Pope Gregory XIII (1572–85) to the German College at Rome in 1671; and then, on 16 October 1672, he ordered the pupils to swear that at the close of their studies they would set out for Germany without a day's delay.
Foreign affairs
Clement X, seeing the results of the apostolic labours of the early French missionaries in Canada, the number of the faithful, and the wide field of labour, resolved to give the Church an independent organisation, and erected a see at Quebec, the bishop to depend directly on the Holy See; this provision would later secure its permanence after Quebec passed into the hands of Great Britain. The first bishop was Francois de Montmorency-Laval.
In 1673, there arrived at Rome ambassadors from the Tsar of Russia, Alexei. He solicited from the Pope the title of Tsar, which, however, had already been adopted by his predecessors. At the same time it could not be forgotten that he gave strong financial aid to King John III Sobieski of Poland in their fight against the Turkish invaders. But Paul Menesius, a Scotsman, who was the ambassador, could not obtain the grant or sanction of that title, though he was received with great magnificence and had many precious gifts to carry back to his master. The Russian Tsar did not profess the Catholic faith in such a manner as to give any assurance of his intentions, and the King of Poland had looked upon the embassy with displeasure.
Clement X suspended the Portuguese Inquisition in 3 October 1674, challenging the techniques employed against the New Christians. The suspension lasted till 1681.
Jubilee
In 1675 Clement X celebrated the fourteenth jubilee of the holy year. Notwithstanding his age, he visited the churches, regretting that the gout prevented him from making that holy visit more than five times. He went twelve times to Trinity hospital to wash the feet of the pilgrims, and after the ceremony gave them liberal alms. A commemorated silver piastra was issued on the occasion of the Holy Year.
Cardinals
Clement X created 20 cardinals in six consistories including Pietro Francesco Orsini, who would become Pope Benedict XIII several decades later.
Death
thumb|right|220px|[[Tomb of Clement X, St. Peter's Basilica, designed by Mattia de' Rossi]]
On 22 July 1676, the agonies of the gout became so violent that Clement X died under them that afternoon. He was eighty-six years old and had governed the Church six years, two months, and twenty-four days. His tomb is in St. Peter's Basilica.
Other accomplishments
He laboured to preserve the peace of Europe even though he was menaced by the ambition of Louis XIV of France (1643–1715), an imperious monarch over ecclesiastical matters (the struggle concerned the régale, or revenues of vacant dioceses and abbeys, which resulted in continued tension with France). He decorated the Ponte Sant'Angelo with the ten statues of angels in Carrara marble still to be seen there.