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Plenitudo potestatis was a term employed by medieval canonists to describe the jurisdictional power of the papacy. In the thirteenth century, the canonists used the term plenitudo potestatis to characterize the power of the pope within the church, or, more rarely, the pope's prerogative in the secular sphere.However, during the thirteenth century the pope's plenitudo potestatis expanded as the Church became increasingly centralized, and the pope's presence made itself felt every day in legislation, judicial appeals, and finance.
Although Plenitudo potestatis had been used in canonical writings since the time of Pope Leo I (440-461), Pope Innocent III (1198-1216) was the first pope to use the term regularly as a description of papal governmental power.Many historians have concluded that the pope's jurisdiction within the church was unchallenged. Essentially, the pope was the highest judge in the Church. His decisions were absolute and could not be abrogated by inferior members of the ecclesiastical hierarchy.
Catharism was a Christian dualist or Gnostic revival movement that thrived in some areas of Southern Europe, particularly what is now northern Italy and southern France, between the 12th and 14th centuries. The followers were known as Cathars, or Good Christians, and are now mainly remembered for a prolonged period of persecution by the Catholic Church, which did not recognise their belief as being Christian. Catharism appeared in Europe in the Languedoc region of France in the 11th century and this is when the name first appears. The adherents were sometimes known as Albigensians, after the city Albi in southern France where the movement first took hold. The belief may have originated in the Byzantine Empire. Catharism was initially taught by ascetic leaders who set few guidelines, and, thus, some Catharist practices and beliefs varied by region and over time. The Catholic Church denounced its practices including the Consolamentum ritual, by which Cathar individuals were baptized and raised to the status of "perfect".
Pope Celestine III, born Giacinto Bobone, was the head of the Catholic Church and ruler of the Papal States from 30 March or 10 April 1191 to his death. He had a tense relationship with several monarchs, including Emperor Henry VI, King Tancred of Sicily, and King Alfonso IX of León.
Pope Innocent IV, born Sinibaldo Fieschi, was the head of the Catholic Church from 25 June 1243 to his death in 1254.
Pope Innocent V, born Pierre de Tarentaise, was head of the Catholic Church and ruler of the Papal States from 21 January to 22 June 1276. A member of the Order of Preachers, he acquired a reputation as an effective preacher. He held one of the two "Dominican Chairs" at university of Paris, and was instrumental in help drawing up the "program of studies" for the Order. In 1269, Peter of Tarentaise was Provincial of the French Province of Dominicans. He was a close collaborator of Pope Gregory X, who named him Bishop of Ostia and raised him to cardinal in 1273.
Pope Innocent III, born Lotario dei Conti di Segni reigned from 8 January 1198 to his death.
Jean du Bellay was a French diplomat and cardinal, a younger brother of Guillaume du Bellay, and cousin and patron of the poet Joachim du Bellay. He was bishop of Bayonne by 1526, member of the Conseil privé of King Francis I from 1530, and bishop of Paris from 1532. He became Bishop of Ostia and Dean of the College of Cardinals in 1555.
An inquisitorial system is a legal system in which the court, or a part of the court, is actively involved in investigating the facts of the case. This is distinct from an adversarial system, in which the role of the court is primarily that of an impartial referee between the prosecution and the defense. Inquisitorial systems are used primarily in countries with civil legal systems, such as France and Italy, as opposed to common law systems.
Unam sanctam is a papal bull issued by Pope Boniface VIII on 18 November 1302. The Bull laid down dogmatic propositions on the unity of the Catholic Church, the necessity of belonging to it for eternal salvation, the position of the Pope as supreme head of the Church, and the duty thence arising of submission to the Pope in order to belong to the Church and thus to attain salvation. The Pope further emphasizes the higher position of the spiritual in comparison with the secular order. Historian Brian Tierney calls it "probably the most famous of all the documents on church and state that has [come] down to us from the Middle Ages." The original document is lost, but a version of the text can be found in the registers of Boniface VIII in the Vatican Archives.
Decretals are letters of a pope that formulate decisions in ecclesiastical law of the Catholic Church.
Guillaume de Nogaret was a French statesman, councillor and keeper of the seal to Philip IV of France.
Innocent III was an antipope from 29 September 1179 to January 1180. His original name was Lando Di Sezze, was the last of four antipopes (1179–80) during the pontificate of Alexander III.
Henry of Segusio, usually called Hostiensis, was an Italian canonist of the thirteenth century, born at Susa (Segusio), in the ancient Diocese of Turin. He died at Lyon.
The Roman Catholic Archdiocese of Poitiers is an archdiocese of the Latin Rite of the Roman Catholic Church in France. The archepiscopal see is in the city of Poitiers. The Diocese of Poitiers includes the two Departments of Vienne and Deux-Sèvres. The Concordat of 1802 added to the see besides the ancient Diocese of Poitiers a part of the Diocese of La Rochelle and Saintes.
Petrus Boeri was a French Benedictine canonist and bishop.
The papal election of 1198 was convoked after the death of Pope Celestine III; it ended with the election of Cardinal Lotario dei Conti di Segni, who took the name Innocent III. In this election for the first time the new pope was elected per scrutinium.
Audouin Aubert was a French jurist, bishop and Cardinal.
Bernard de Castanet was a French lawyer, judge, diplomat, bishop and cardinal of the Roman Catholic Church. Castanet was not a Dominican, though he had an excellent relationship with the order of the Preachers and occasionally exercised the office of inquisition as a bishop of Albi and a representative of the inquisitor of Carcassonne.
Agostino Paravicini Bagliani is an Italian historian, specializing in the history of the papacy, cultural anthropology, and in the history of the body and the relationship between nature and society during the Middle Ages.
The Collectio canonum quadripartita is an early medieval canon law collection, written around the year 850 in the ecclesiastical province of Reims. It consists of four books. The Quadripartita is an episcopal manual of canon and penitential law. It was a popular source for knowledge of penitential and canon law in France, England and Italy in the ninth and tenth centuries, notably influencing Regino's enormously important Libri duo de synodalibus causis. Even well into the thirteenth century the Quadripartita was being copied by scribes and quoted by canonists who were compiling their own collections of canon law.
The sun and moon allegory is used to image a medieval political theory of theocracy which submits the secular power to the spiritual power, stating that the Pope is like the sun i.e. the only source of own light, while the Emperor is like the moon, which merely reflects lights and has no value without the sun. It was espoused by the Roman Catholic Church of Innocent III and instantiated to some extent in medieval political practice.