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Pope Gregory IX

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Pope
Gregory IX
Bishop of Rome
Mosaic of Gregory IX, c. 1225-50
Mosaic of Gregory IX, c. 1225-50
Church Catholic Church
Papacy began 19 March 1227
Papacy ended 22 August 1241
Predecessor Honorius III
Successor Celestine IV
Previous posts Cardinal-Deacon of Sant'Eustachio (1198–1206)
Cardinal-Bishop of Ostia e Velletri (1206–1227)
Dean of the College of Cardinals (1206-1227)
Orders
Consecration c. 1206
Created cardinal December 1198
by Innocent III
Personal details
Born Ugolino di Conti
1145
Anagni, Papal States
Died 22 August 1241 (aged 95–96)
Rome, Papal States
Other popes named Gregory

Pope Gregory IX (Latin: Gregorius IX; born Ugolino di Conti; 1145 – 22 August 1241)[1] was head of the Catholic Church and the ruler of the Papal States from 19 March 1227 until his death in 1241. He is known for issuing the Decretales and instituting the Papal Inquisition, in response to the failures of the episcopal inquisitions established during the time of Pope Lucius III, by means of the papal bull Ad abolendam, issued in 1184.

He worked initially as a cardinal, and after becoming the successor of Honorius III, he fully inherited the traditions of Gregory VII and of his own cousin Innocent III, and zealously continued their policy of papal supremacy.

Early life and education

Ugolino (Hugh) was born in Anagni near Rome. The date of his birth varies in sources between c. 1145[1] and 1170.[2] He is said to have been "in his nineties, if not nearly one hundred years old" at his death.[3] He received his education at the Universities of Paris and Bologna.

He was created Cardinal-Deacon of the church of Sant'Eustachio by his cousin[4] Innocent III in December 1198. In 1206, he was promoted to the rank of Cardinal Bishop of Ostia e Velletri. He became Dean of the Sacred College of Cardinals in 1218 or 1219. Upon the special request of Saint Francis, in 1220, Pope Honorius III appointed him Cardinal Protector of the order of the Franciscans.

As Cardinal Bishop of Ostia, he cultivated a wide range of acquaintances, among them the Queen of England, Isabella of Angoulême.[5]

Papacy

Gregory IX was elevated to the papacy in the papal election of 1227.[1] He took the name "Gregory" because he formally assumed the papal office at the monastery of Saint Gregory ad Septem Solia.[6] That same year, in one of his earliest acts as pope, he expanded the Inquisition powers already assigned to Konrad von Marburg to encompass the investigation of heresy throughout the whole of Germany.

Gregory's bull Parens scientiarum of 1231, after the University of Paris strike of 1229, resolved differences between the unruly university scholars of Paris and the local authorities. His solution was in the manner of a true follower of Innocent III: he issued what in retrospect has been viewed as the magna carta of the university, assuming direct control by extending papal patronage: his bull allowed future suspension of lectures over a flexible range of provocations, from "monstrous injury or offense" to squabbles over "the right to assess the rents of lodgings".

In October 1232, after an investigation by legates, Gregory proclaimed a crusade against the Stedinger to be preached in northern Germany. In June 1233, he granted a plenary indulgence to those who took part.[7]

In 1233, Gregory IX established the Papal Inquisition to regularize the prosecution of heresy.[8] According to Thomas Madden, a defender of the Inquisition, the Papal Inquisition was intended to bring order to the haphazard episcopal inquisitions which had been established by Lucius III in 1184. Gregory's aim allegedly was to bring order and legality to the process of dealing with heresy, since there had been tendencies by mobs of townspeople to burn alleged heretics without much of a trial. In 1231 Pope Gregory IX appointed a number of Papal Inquisitors (Inquisitores haereticae pravitatis), mostly Dominicans and Franciscans, for the various regions of France, Italy and parts of Germany. Contrary to popular belief, says Madden, the aim was to introduce due process and objective investigation into the beliefs of those accused to the often erratic and unjust persecution of heresy on the part of local ecclesiastical and secular jurisdictions.[9] However, to Walter Ullmann, "there is hardly one item in the whole Inquisitorial procedure that could be squared with the demands of justice; on the contrary, every one of its items is the denial of justice or a hideous caricature of it [...] its principles are the very denial of the demands made by the most primitive concepts of natural justice [...] This kind of proceeding has no longer any semblance to a judicial trial but is rather its systematic and methodical perversion."[10]

Gregory was a remarkably skillful and learned lawyer. He caused to be prepared Nova Compilatio decretalium, which was promulgated in numerous copies in 1234 (first printed at Mainz in 1473). This New Compilation of Decretals was the culmination of a long process of systematising the mass of pronouncements that had accumulated since the Early Middle Ages, a process that had been under way since the first half of the 12th century and had come to fruition in the Decretum, compiled and edited by the papally commissioned legist Gratian and published in 1140. The supplement completed the work, which provided the foundation for papal legal theory.

In the 1234 Decretals, he invested the doctrine of perpetua servitus iudaeorum – perpetual servitude of the Jews – with the force of canonical law. According to this, the followers of the Talmud would have to remain in a condition of political servitude until Judgment Day. The doctrine then found its way into the doctrine of servitus camerae imperialis, or servitude immediately subject to the Emperor's authority, promulgated by Frederick II. The Jews were thus suppressed from having direct influence over the political process and the life of Christian states into the 19th century and the rise of liberalism.[11] In 1234, Gregory issued the papal bull Rachel suum videns calling for a new crusade to the Holy Land, leading to the Crusade of 1239.

In 1239, under the influence of Nicholas Donin, a Jewish convert to Christianity, Gregory ordered that all copies of the Jewish Talmud be confiscated. Following a public disputation between Christians and Jewish theologians, this culminated in a mass burning of some 12,000 handwritten Talmudic manuscripts on 12 June 1242, in Paris.

Gregory was a supporter of the mendicant orders which he saw as an excellent means for counteracting by voluntary poverty the love of luxury and splendour which was possessing many ecclesiastics. He was a friend of Saint Dominic as well as Clare of Assisi. On 17 January 1235, he approved the Order of Our Lady of Mercy for the redemption of captives. He appointed ten cardinals[12] and canonized Saints Elisabeth of Hungary, Dominic, Anthony of Padua, and Francis of Assisi, of whom he had been a personal friend and early patron. He transformed a chapel to Our Lady in the church of Santa Maria del Popolo in Rome.

Gregory IX endorsed the Northern Crusades and attempts to bring Orthodox Russians, particularly in the Pskov Republic and the Novgorod Republic, under the Papacy's fold.[13] In 1229, he declared that Finlandia (Finland) had passed under his protection.[14] In 1232, Gregory IX asked the Livonian Brothers of the Sword to send troops to protect Finland, whose semi-pagan people were fighting against the Novgorod Republic in the Finnish-Novgorodian wars;[15] however, there is no known information if any ever arrived to assist. Gregory received news in 1237 that the Tavastians rejected Christianity and he called on all Christians to join him in a crusade.[16]

The pope struggled with a revolt in Rome in 1234.[17]

Struggle with Frederick II

At the coronation of Frederick II in Rome, 22 November 1220, the emperor made a vow to embark for the Holy Land in August 1221. Gregory IX began his pontificate by suspending the Holy Roman Emperor Frederick II, for dilatoriness in carrying out the promised Sixth Crusade. Frederick II appealed to the sovereigns of Europe complaining of his treatment. The suspension was followed by excommunication and threats of deposition, as deeper rifts appeared. Frederick II went to the Holy Land and in fact managed to take possession of Jerusalem. Gregory IX distrusted the emperor, since Rainald, the imperial Governor of Spoleto, had invaded the Pontifical States during the emperor's absence.[1] In June 1229, Frederick II returned from the Holy Land, routed the papal army which Gregory IX had sent to invade Sicily, and made new overtures of peace to the pope. The war of 1228–1230 is known as the War of the Keys.

Gregory IX and Frederick came to a truce, but when Frederick defeated the Lombard League in 1239, the possibility that he might dominate all of Italy, surrounding the Papal States, became a very real threat. A new outbreak of hostilities led to a fresh excommunication of the emperor in 1239 and to a prolonged war. Gregory denounced Frederick II as a heretic and summoned a council at Rome to give point to his anathema. Frederick responded by trying to capture or sink as many ships carrying prelates to the synod as he could. Eberhard II von Truchsees, Prince-Archbishop of Salzburg, in 1241 at the Council of Regensburg declared that Gregory IX was "that man of perdition, whom they call Antichrist, who in his extravagant boasting says, 'I am God, I cannot err'."[18]

The struggle only ended with Gregory IX's death on 22 August 1241.[19] The pope died before events could reach their climax; it was his successor, Innocent IV, who in 1245 declared a crusade that would finish the Hohenstaufen threat.

See also

From the 1913 Catholic Encyclopedia

Pope Gregory IX — (UGOLINO, Count of Segni).

Born about 1145, at Anagni in the Campagna; died 22 August, 1241, at Rome. He received his education at the Universities of Paris and Bologna. After the accession of Innocent III to the papal throne, Ugolino, who was a nephew of Innocent III, was successively appointed papal chaplain, Archpriest of St. Peter's, and Cardinal-Deacon of Saint' Eustachio in 1198. In May, 1206, he succeeded Octavian as Cardinal-Bishop of Ostia and Velletri. A year later he and Cardinal Brancaleone were sent as papal legates to Germany to mediate between Philip of Swabia and Otto of Brunswick, both of whom laid claim to the German throne subsequent to the death of Henry VI. By order of the pope the legates freed Philip from the ban which he had incurred under Pope Celestine III on account of invading the Pontifical States. Though the legates were unable to induce Otto of Brunswick to give up his claims to the throne, they succeeded in effecting a truce between the two claimants and returned to Rome in 1208 to treat with the pope concerning their future procedure. On their way back to Germany early in June, 1208, they were apprised at Verona that Philip had been murdered, and again returned to Rome. Early in January, 1209, they again proceeded to Germany with instructions to induce the princes to acknowledge Otto of Brunswick as king. They were successful in their mission and returned to Rome in June of the same year. After the death of Pope Innocent III, 16 July, 1216, Ugolino was instrumental in the election of Pope Honorius III on 18 July. In order to hasten the choice the College of Cardinals had agreed to an election by compromise and empowered Cardinals Ugolino and Guido of Preneste to appoint the new pope.

In January, 1217, Honorius III made Ugolino plenipotentiary legate for Lombardy and Tuscia, and entrusted him with preaching the crusade in those territories. In this capacity he became a successful mediator between Pisa and Genoa, in 1217, between Milan and Cremona in 1218, and between Bologna and Pistoia in 1219. At the coronation of Frederick II in Rome, 22 November, 1220, the emperor took the cross from Ugolino and made the vow to embark for the Holy Land in August, 1221. On 14 March, 1221, Pope Honorius commissioned Ugolino to preach the crusade also in Central and Upper Italy. After the death of Pope Honorius III (18 March, 1227), the cardinals again agreed upon an election by compromise and empowered three of their number, among whom were Ugolino and Conrad of Urach, to elect the new pope. At first Conrad of Urach was elected, but he refused the tiara lest it might appear that he had elected himself. Hereupon the cardinals unanimously elected Ugolino on 19 March, 1227, and he reluctantly accepted the high honour, taking the name of Gregory IX. Though he was already far advanced in age (being more than eighty years old), he was still full of energy.

The important diplomatic positions which Gregory IX had held before he became pope had acquainted him thoroughly with the political situation of Europe, and especially with the guileful and dishonest tactics of Emperor Frederick II. Three days after his installation he sternly ordered the emperor at last to fulfill his long delayed vow to embark for the Holy Land. Apparently obedient to the papal mandate, Frederick II set sail from Brindial on 8 September, 1227, but returned three days later under the plea that the Landgrave of Thuringia, who was accompanying him, was on the point of death, and that he himself was seriously ill. Gregory IX, knowing that Frederick II had on eight or nine previous occasions postponed his departure for the East, distrusted the emperor's sincerity, and on 20 September, 1227, placed him under the ban of the Church. He tried to justify his severe measures towards the emperor in a Brief to the Christian princes, while, on the other hand, the emperor addressed a manifesto to the princes in which he condemns the actions of the pope in very bitter terms. The imperial manifesto was read publicly on the steps of the Capitol in Rome, whereupon the imperial party in Rome, under the leadership of the Frangipam, stirred up an insurrection, so that when the pope published the emperor's excommunication in the basilica of St. Peter, 23 March, 1228, he was openly insulted and threatened by a Ghibelline mob, and fled first to Viterbo, and then to Perugia.

In order to prove to the Christian world that the pope was too hasty in placing him under the ban, the emperor resolved to proceed to the Holy Land and embarked from Brindial with a small army on 28 June, 1228, having previously asked the blessing of Gregory IX upon his enterprise. The pope, however, denying that an excommunicated emperor had a right to undertake a holy war, not only refused his blessing, but put him under the ban a second time and released the crusaders from their oath of allegiance to him. While in the Holy Land the emperor, seeing that he could accomplish nothing as long as he was under the ban, changed his tactics toward the pope. He now acknowledged the justice of his excommunication and began to take steps towards a reconciliation. Gregory IX distrusted the advances of the emperor, especially since Rainald, the imperial Governor of Spoleto, had invaded the Pontifical States during the emperor's absence. But the papal anathema did not have the effect which Gregory IX had hoped for. In Germany only one bishop, Berthold of Strasburg, published the Bull of excommunication, and nearly all the princes and bishops remained faithful to the emperor. Cardinal Otto of San Nicolo, whom Gregory IX had sent to Germany to publish the emperor's excommunication, was entirely unsuccessful, because Frederick's son Henry, his representative in Germany, forbade the bishops and abbots to appear at the synods which the cardinal attempted to convene. Equally futile were Gregory's efforts to put Duke Otto of Brunswick on the German throne. In June, 1229, Frederick II returned from the Holy Land, routed the papal army which Gregory IX had sent to invade Sicily, and made new overtures of peace to the pope. Gregory IX, who had been a fugitive at Perugia since 1228, returned to Rome in February, 1230, upon the urgent request of the Romans, who connected an overwhelming flood of the Tiber with their harsh treatment of the pontiff. He now opened negotiations with Hermann of Salza (q. V.), the Grand Master of the Teutonic Order, whom the emperor had sent as his representative. On 20 July, 1230, a treaty was concluded at San Germano between the pope and the emperor, by force of which that part of the Pontifical States which was occupied by imperial troops and the papal possessions in Sicily were restored to the pope. After the ban was removed from the emperor by Cardinals John of Sabina and Thomas of Capua in the imperial camp near Ceperano on 28 August, 1230, pope and emperor met at Anagni and completed their reconciliation during the first three days of September.

The peace concluded between the pope and the emperor was, however, to be only temporary. The papacy as conceived by Gregory IX and the empire as conceived by Frederick II could not exist together in peace. The emperor aimed at supreme temporal power with which the pope should have no right to interfere. At least in Italy he tried to establish a rule of absolutism by suppressing all municipal liberty and holding the cities in subjection by a revived sort of feudalism. The pope, on the other hand, citing the example of Constantine, who exchanged Rome for Constantinople in deference to the pope, thought that the pope should be the supreme ruler in Italy and by force of his spiritual authority over the whole Christian world the papacy should in all things hold the supremacy over the empire. For a time the emperor assisted the pope in suppressing a few minor revolts in the Pontifical States, as was stipulated in the conditions of peace. Soon, however, he began again to disturb the peace by impeding the liberty of the Church in Sicily and by making war upon Lombardy. The freedom of the Lombard cities was a strong and necessary bulwark for the safety of the Pontifical States and it was only natural that the pope should use all his influence to protect these cities against the imperial designs. As arbiter between the emperor and the Lombard cities the pope had a few times decided in favour of the latter. The emperor, therefore, no longer desired the services of the pope as mediator and began open hostilities against the Lombard League. He gained a signal victory at Cortenuova on 27 November, 1237. To save Lombardy from the despotic rule of the emperor and to protect the Pontifical States, the pope entered into an alliance with the Tuscans, Umbrians, and Lombards to impede the imperial progress. The continuous victories of the emperor spurred his pride to further action. He declared his intention to unite with the empire not only Lombardy and Tuscany, but also the Patrimony of St. Peter and practically the whole of Italy. On 12 March, 1239, the pope again excommunicated the emperor and another disastrous struggle between the papacy and the empire ensued. Henceforth the pope was convinced that as long as Frederick was emperor there was no possibility of peace between the papacy and the empire, and he left nothing undone to bring about his disposition. He ordered a crusade to be preached against him in Germany, instructed his Germnan legate Albert of Behaim, the Archdeacon of Passau, to urge the election of a new king upon the princes, and to place under the ban all those that continued to side with the excommunicated emperor. Despite papal anathemas many bishops and princes remained loyal to the emperor who, encouraged by his large following, decided to humiliate the pope by making himself master of the Pontifical States. In this great distress the pope ordered all bishops to assemble in Rome for a general council at Easter (31 March), 1241. But the emperor prevented the meeting of the council by forbidding the bishops to travel to Rome and by capturing all those that undertook the journey despite his prohibition. He himself marched towards Rome with an army and lay encamped near the city, when Gregory IX suddenly died at the age of almost one hundred years.

The mendicant orders which began to shed great lustre over the Christian Church in the first half of the thirteenth century found a devoted friend and liberal patron in Gregory IX. In them he saw an excellent means for counteracting by voluntary poverty the love of luxury and splendour which was possessing many ecclesiastics; a powerful weapon for suppressing heresy within the Church; and an army of brave soldiers of Christ who were ready to preach His Gospel to the pagans even at the risk of their life. When still Cardinal-Bishop of Ostia, Gregory IX would often don the dress of St. Francis, walk about barefoot with the saint and his disciples, and talk of holy things. Saint Francis loved him as his father and in a prophetic spirit addressed him at times as "the bishop of the whole world and the father of all nations". Upon the special request of Saint Francis, Pope Honorius III appointed him protector of the order in 1220. He was also a devoted friend of St. Dominic and promoted the interests of his order in many ways. At the death of St. Dominic he held the funeral services and buried the saint at Bologna in 1221. St. Clare and her order stood likewise under the protection of Gregory IX, as is attested by the convents he founded for the order in Rome, Lombardy, and Tuscia. However, despite his great liberality towards the rising mendicant orders he did not neglect the older ones. On 28 June, 1227, he approved the old privileges of the Camaldolese, in the same year he introduced the Premonstratensians into Livonia and Courland, and on 6 April, 1229, he gave new statutes to the Carmelites. He financially and otherwise assisted the Cistercians and the Teutonic Order in the Christianization of Prussia and the neighboring countries of the North. On 17 January, 1235, he approved the Order of Our Lady of Mercy for the redemption of captives. With the help of the religious orders he planned the conversion of Asia and Africa and sent missionaries out of their ranks to Tunis, Morocco, and other places, where not a few suffered martyrdom. He also did much to alleviate the hard lot of the Christians in the Holy Land, and would have done still more, if his plans to recover the Holy Land for the Christians had not been frustrated by the indifference of Frederick II. The calendar of saints was enriched with some of the most popular names by Gregory IX. On 16 July, 1228, he canonized St. Francis of Assisi, and on the next day he laid the cornerstone of the church and monastery which were erected in honour of the saint. He took part in the composition of the Office of St. Francis and also wrote some hymns in his honour. It was also at his command that Thomas of Celano wrote a biography of the saint (latest and best edition by d'Alencon, Rome, 1906). On 30 May, 1232, he canonized St. Anthony of Padua, at Spoleto; on 10 June, 1233, St. Virgil, Bishop of Salzburg and Apostle of Carinthia; on 8 July, 1234, St. Dominic, at Rieti; and on 27 May, 1235, St. Elizabeth of Thuringia, at Perugia.

Gregory IX was very severe towards heretics, who in those times were universally looked upon as traitors and punished accordingly. Upon the request of King Louis IX of France, he sent Cardinal Romanus as legate to assist the king in his crusade against the Albigenses. At the synod which the papal legate convened at Toulouse in November, 1229, it was decreed that all heretics and their abettors should be delivered to the nobles and magistrates for their due punishment, which, in case of obstinacy, was usually death. When in 1224 Frederick II ordered that heretics in Lombardy should be burnt at the stake, Gregory IX, who was then papal legate for Lombardy, approved and published the imperial law. During his enforced absence from Rome (1228-1231) the heretics remained unmolested and became very numerous in the city. In February, 1231, therefore, the pope enacted a law for Rome that heretics condemned by an ecclesiastical court should be delivered to the secular power to receive their "due punishment". This "due punishment" was death by fire for the obstinate and imprisonment for life for the penitent. In pursuance of this law a number of Patarini were arrested in Rome in 1231, the obstinate were burned at the stake, the others were imprisoned in the Benedictine monasteries of Monte Cassino and Cava (Ryccardus de S. Germano, ad annum 1231, in Mon. Germ. SS., XIX, 363). It must not be thought, however, that Gregory IX dealt more severely with heretics than other rulers did. Death by fire was the common punishment for heretics and traitors in those times. Up to the time of Gregory IX, the duty of searching out heretics belonged to the bishops in their respective dioceses. The so-called Monastic Inquisition was established by Gregory IX, who in his Bulls of 13, 20, and 22 April, 1233, appointed the Dominicans as the official inquisitors for all dioceses of France (Ripoil and Bremond, "Bullarium Ordinia Fratrum Praedicatorum", Rome, 1729, I, 47).

For a time Gregory IX lived in hope that he might effect a reunion of the Latin and Greek Churches. Germanos, Patriarch of Constantinople, after a conversation on the religious differences between the Greeks and the Latins, which he had with some Franciscans at Nice, in 1232, addressed a letter to Gregory IX, in which he acknowledged the papal primacy, but complained of the persecution of the Greeks by the Latins. Gregory IX sent him a cordial answer and commissioned four learned monks (two Franciscans and two Dominicans) to treat with the patriarch concerning the reunion. The papal messengers were kindly received both by the Emperor Vatatzes and by Germanos, but the patriarchs said that he could make no concessions on matters of faith without the consent of the Patriarchs of Jerusalem, Antioch, and Alexandria. A synod of the patriarchs was held at Nympha in Bithynia, to which the papal messengers were invited. But the Greeks stubbornly adhered to their doctrine concerning the procession of the Holy Ghost and asserted that the Latins could not validly consecrate unleavened bread. Thus Gregory IX failed, like many other popes before and after him, in his efforts to reunite the two Churches. In 1237 the Patriarch of the Syrian Monophysites and many of his bishops and monks renounced their heresy and submitted to the pope (Raynaldus ad annum 1237, n. 87 sq.), but their conversion was only temporary.

During the thirteen years and four months of his pontificate he created about fourteen cardinals, many of whom were members of religious orders. The best known among them are Sinibald of Fiesco, a learned canonist, who afterwards ascended the papal throne as Innocent IV; Raynald of Segni, a nephew of Gregory IX, who succeeded Innocent IV as Alexander IV; Otto of Montferrat, who spent over three years (1237-1240) as papal legate in England; Jacob of Vitry, an author, confessor of St. Mary of Oignies, whose life he wrote (Acta SS., June, IV, 636-66); St. Francis Nonatus; and the learned and pious Englishman, Robert of Somercote, who, it is said, would have succeeded Gregory IX on the papal throne had he not died during the conclave (26 Sept., 1241). Gregory IX was also a man of learning, which he encouraged in various ways. He bestowed many privileges on the University of Paris, his Alma Mater, but also watched carefully over its professors, whom he warned repeatedly against the growing tendency of subjecting theology to philosophy by making the truth of the mysteries of faith dependent on philosophical proofs. He also possesses the great merit of having again made Aristotelianism the basis of scholastic philosophy, after the Physics of Aristotle had been prohibited in 1210; and his Metaphysics in 1215. The prohibition of Aristotle was meant only for the perverted Latin translation of his works and their Averroistic commentaries. Gregory IX commissioned William of Auvergne and other learned men to purge the works of Aristotle of their errors and thus made them again accessible to students. Among the greatest achievements of Gregory IX must be counted the collection of papal decretals, a work with which he entrusted Raymond of Pennaforte and which was completed in 1234 (see DECRETALS). The numerous letters of Gregory IX were first collected and published by Pamelius (Antwerp, 1572). Rodenburg edited 485 letters of Gregory IX, selected by Perts from the papal registers of the thirteenth century, and published them in "Mon. Germ. Epist. Rom. Pontif." (Berlin, 1883), I, 261-728. Lucian Auvray began (Paris, 1890) to edit "Les Registres de Gregoire IX, recueil des bulles de ce pape, publiées ou analysées d'après les manuscrits originaux du Vatican", of which the eleventh fascicle appeared in 1908.

A Life of Gregory IX, Vita Gregorii IX, was written by a contemporary of Gregory IX, perhaps JOANNES DE FERENTINO. It was published by MURATORI in Rerum Italicorum Scriptores (Milan, 1728), III, i, 577-588. Concerning it see MARX, Die Vita Gregorii IX quellenkritisch untersucht (Berlin, 1889). The two best modern references are: BALAN, Storia di Gregorio IX e dei suoi tempi, 3 vol. (Modena, 1872-3); FELTEN, Papsi Gregor IX. (Freiburg, 1886); see also KOEHLER, VerhaltnissFriedrichs II zu den Papsien seiner Zeit (Breslau, 1888); HUILLARD-BREHOLLER, Historia diplomatica Frederici II, 12 vols. (Paris, 1852-61); BOEHMER-FICKER, Regesten des Kaiser-reiches (Innsbruck, 1879-81); WINKELMANN, Acta imperii inedita soec. XIII et XIV, 2 vols. (Innsbruck, 1880-85); PAGI, Breviarium Gestorum Pont. Rom. (Venice, 1730), III, 214-243.

References

  1. Back to citation occurrence 1.0 Back to citation occurrence 1.1 Back to citation occurrence 1.2 Back to citation occurrence 1.3 Ott, Michael (1909). "Pope Gregory IX". Catholic Encyclopedia. Vol. 6.
  2. Back to citation Friedrich Wilhelm Bautz (1990). "Gregor IX., Papst". In Bautz, Friedrich Wilhelm (ed.). Biographisch-Bibliographisches Kirchenlexikon (BBKL) (in German). Vol. 2. Hamm: Bautz. cols. 317–320. ISBN 3-88309-032-8.
  3. Back to citation Brett Edward Whalen (2019), The Two Powers: The Papacy, the Empire, and the Struggle for Sovereignty in the Thirteenth Century, University of Pennsylvania Press, p. 122.
  4. Back to citation Werner Maleczek, Papst und Kardinalskolleg von 1191 bis 1216, (Vienna: Verlag der Oesterreichischen Akademie der Wissenschaften, 1984), 126–133.
  5. Back to citation David Abulafia, Frederick II: a Medieval Emperor 1992. 480 pages. Oxford University Press, ISBN 0-19-508040-8
  6. Back to citation "De Montor, Artaud. The Lives and Times of the Popes, The Catholic Publication Society of New York, 1911". Archived from the original on 2015-09-24. Retrieved 2014-07-24.
  7. Back to citation Carsten Selch Jensen, "Stedinger Crusades (1233–1234)", in Alan V. Murray (ed.), The Crusades: An Encyclopedia, 4 vols. (ABC-CLIO, 2017), vol. 4, pp. 1121–1122.
  8. Back to citation Vizzier, Anne, "Gregory IX", Dictionary of World Biography, Vol. 2, Frank Northen Magill, Alison Aves ed., Routledge, 1998 ISBN 9781579580414
  9. Back to citation Thomas Madden, "The Real Inquisition", National Review, June 18, 2004.
  10. Back to citation Saraiva, António José (2001). The Marrano Factory: The Portuguese Inquisition and Its New Christians. Brill. pp. 61–62.
  11. Back to citation Dietmar Preissler, Frühantisemitismus in der Freien Stadt Frankfurt und im Großherzogtum Hessen (1810 bis 1860), p. 30, Carl Winter Universitätsverlag, Heidelberg 1989, ISBN 3-533-04129-8 (in German). The doctrine's Vatican indexing is liber extra – c. 13, X, 5.6, De Iudaeis: Iudaeos, quos propria culpa submisit perpetua servituti; the Decretum online Archived 2008-07-24 at the Wayback Machine (in Latin)
  12. Back to citation Agostino Paravicini Bagliani, Cardinali di Curia e "Familiae" cardinalizie dal 1227 al 1254 2 vols. (series "Italia Sacra", Padua: Antenori) 1972 (in Italian). A prosopography that includes Gregory's ten cardinals and their familiae or official households, both clerical and lay.
  13. Back to citation Christiansen 1997, pp. 112, 128.
  14. Back to citation Kirby, David (13 July 2006). A Concise History of Finland. Cambridge University Press. p. 4. ISBN 978-0-521-83225-0.
  15. Back to citation "Letter by Pope Gregory IX". Archived from the original on 2007-08-14. In Latin.
  16. Back to citation Christiansen 1997, p. 112.
  17. Back to citation Brezzi, Paolo. Roma e l'impero medioevale (774-1252). Bologna: Cappelli, 1947. pp. 419–420.
  18. Back to citation The Methodist Review Vol. XLIII, No. 3, p. 305.
  19. Back to citation Brooke 2006, p. 85.

Bibliography

Further reading

  • Pietro Balan, Storia di Gregorio IX e suoi tempi 3 volumes (Modena 1873).
  • Kathleen Brady, Francis and Clare The Struggles of the Saints of Assisi. (New York: Lodwin Press, 2021). ISBN 978-1565482210.
  • Joseph Felten, Papst Gregor IX. (Freiburg i. B. 1886).
  • Iben Fonnesberg-Schmidt, The Popes and the Baltic Crusades 1147–1254 (Leiden, Brill. 2007) (The Northern World, 26).
  • Guido Levi, Registri dei Cardinali Ugolino d' Ostia e Ottaviano degli Ubaldini (Roma 1890).
  • Damian J. Smith, ed. Pope Gregory IX (1227–1241): Power and Authority (Amsterdam University Press, 2023).
  • Spence, Richard (1979). "Gregory IX's attempted expeditions to the Latin Empire of Constantinople: the crusade for the union of the Latin and Greek churches". Journal of Medieval History. 5 (3): 163–176.
  • Jeffrey M. Wayno. "Governing through influence at the thirteenth-century papal court". Journal of Medieval History (2022).
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