A cardinal is a senior member of the clergy of the Catholic Church. Cardinals are created by the pope and typically hold the title for life. Collectively, they constitute the College of Cardinals. The most solemn responsibility of the cardinals is to elect a new pope in a conclave, almost always from among themselves, when the Holy See is vacant. During the period between a pope's death or resignation and the election of his successor, the day-to-day governance of the Holy See is in the hands of the College of Cardinals. The right to participate in a conclave is limited to cardinals who have not reached the age of 80 years by the day the vacancy occurs. In addition, cardinals collectively participate in papal consistories, in which matters of importance to the Church are considered and new cardinals may be created. Cardinals of working age are also appointed to roles overseeing dicasteries of the Roman Curia, the central administration of the Catholic Church.
The Council of Trent, held between 1545 and 1563 in Trent, now in northern Italy, was the 19th ecumenical council of the Catholic Church. Prompted by the Protestant Reformation at the time, it has been described as the embodiment of the Counter-Reformation.
The First Ecumenical Council of the Vatican, commonly known as the First Vatican Council or Vatican I, was the 20th ecumenical council of the Catholic Church, held three centuries after the preceding Council of Trent which was adjourned in 1563. The council was convoked by Pope Pius IX on 29 June 1868, under the rising threat of the Kingdom of Italy encroaching on the Papal States. It opened on 8 December 1869 and was adjourned on 20 September 1870 after the Italian Capture of Rome. Its best-known decision is its definition of papal infallibility.
Pope Adrian V, born Ottobuono de' Fieschi, was the head of the Catholic Church and ruler of the Papal States from 11 July 1276 to his death on 18 August 1276. He was an envoy of Pope Clement IV sent to England in May 1265 who successfully completed his task of resolving disputes between King Henry III of England and his barons. Adrian V was elected pope following the death of Innocent V, but died of natural illness before being ordained to the priesthood.
Pope Benedict XIV, born Prospero Lorenzo Lambertini, was head of the Catholic Church and ruler of the Papal States from 17 August 1740 to his death in May 1758.
Pope Pius II, born Enea Silvio Bartolomeo Piccolomini, was head of the Catholic Church and ruler of the Papal States from 19 August 1458 to his death.
Pope Pius IV, born Giovanni Angelo Medici, was head of the Catholic Church and ruler of the Papal States from 25 December 1559 to his death, in December 1565. Born in Milan, his family considered itself a branch of the House of Medici and used the same coat of arms. Although modern historians have found no proof of this connection, the Medici of Florence recognized the claims of the Medici of Milan in the early 16th century.
Pope Pius III, born Francesco Todeschini, was head of the Catholic Church and ruler of the Papal States from 22 September 1503 to his death. At just twenty-six days, he had one of the shortest pontificates in papal history.
Pope Pius V, OP, born Antonio Ghislieri, was head of the Catholic Church and ruler of the Papal States from 7 January 1566 to his death, in May 1572. He is venerated as a saint of the Catholic Church. He is chiefly notable for his role in the Council of Trent, the Counter-Reformation, and the standardization of the Roman Rite within the Latin Church, known as the Tridentine mass. Pius V declared Thomas Aquinas a Doctor of the Church.
Pope Sixtus V, born Felice Piergentile, was head of the Catholic Church and ruler of the Papal States from 24 April 1585 to his death, in August 1590. As a youth, he joined the Franciscan order, where he displayed talents as a scholar and preacher, and enjoyed the patronage of Pius V, who made him a cardinal. As a cardinal, he was known as Cardinal Montalto.
Pope Pius VI was head of the Catholic Church and ruler of the Papal States from 15 February 1775 to his death in August 1799.
Pope Leo XII, born Annibale Francesco Clemente Melchiorre Girolamo Nicola della Genga, was head of the Catholic Church and ruler of the Papal States from 28 September 1823 to his death in February 1829.
Pope Leo XIII was head of the Catholic Church from 20 February 1878 until his death in July 1903. Living until the age of 93, he was the oldest pope, whose age can be validated, holding office and had the fourth-longest reign of any pope, behind those of Peter the Apostle, Pius IX and John Paul II.
Pope Pius IX was head of the Catholic Church from 1846 to 1878. His reign of 32 years is the longest of any pope in history. He was notable for convoking the First Vatican Council in 1868 and for permanently losing control of the Papal States in 1870 to the Kingdom of Italy. Thereafter, he refused to leave Vatican City, declaring himself a "prisoner in the Vatican".
Pope Pius X was head of the Catholic Church from 4 August 1903 to his death in August 1914. Pius X is known for vigorously opposing modernist interpretations of Catholic doctrine, and for promoting liturgical reforms and scholastic theology. He initiated the preparation of the 1917 Code of Canon Law, the first comprehensive and systemic work of its kind. He is venerated as a saint in the Catholic Church.
Pope Gregory XVI was head of the Catholic Church and ruler of the Papal States from 2 February 1831 to his death in June 1846. He had adopted the name Mauro upon entering the religious order of the Camaldolese.
The First Council of Lyon was the thirteenth ecumenical council, as numbered by the Catholic Church, taking place in 1245. This was the first ecumenical council to be held outside Rome's Lateran Palace.
Giacomo Antonelli was an Italian Catholic prelate who served as Cardinal Secretary of State for the Holy See from 1848 until his death. He played a key role in Italian politics, resisting the unification of Italy and affecting Catholic interests in European affairs. He was often called the "Italian Richelieu" and the "Red Pope."
Ercole Consalvi was a deacon and cardinal of the Catholic Church, who served twice as Cardinal Secretary of State for the Papal States and who played a crucial role in the post-Napoleonic reassertion of the legitimist principle of the divine right of kings, of which he was a constant supporter.
The Secretariate of Briefs to Princes and of Latin Letters, or simply the Secretariate of Briefs, was one of the offices of the Roman Curia abrogated in 1967 during Pope Paul VI's reform of the Pontifical court. It was divided into two sections.
