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The Diploma Ottonianum (also called the Pactum Ottonianum, Privilegium Ottonianum or simply Ottonianum) was an 962 agreement between Pope John XII and Otto I, King of Germany and Italy. [1] It confirmed the earlier Donation of Pepin, granting control of the Papal States to the Popes, regularizing Papal elections, and clarifying the relationship between the Popes and the Holy Roman Emperors.
The forces of John XII, not yet 26 years of age, had been defeated in the war against Pandolfo Testa di Ferro of Capua, and at the same time many strongholds in the Papal States were occupied by Berengar of Ivrea, effectively if not completely legally King of Italy, and his son Adalbert. In this dilemma the Pope had recourse to Otto who reappeared in Italy at the head of a powerful army, as he had in the previous decade, now ostensibly as a papal champion. Berengar, however, did not risk an encounter, but retired to his fortified castles. [2]
Thus, without conclusive military encounters, on January 31, 962, Otto reached Rome. He took an oath to recognize John as Pope and ruler of Rome; to issue no decrees without the Pope's consent; and, in case he should deliver the command in Italy to anyone else, to exact from such person an oath to defend to the utmost of his ability the Pope and the Patrimony of Peter. The Pope for his part swore to keep faith with Otto and to conclude no alliance with Berengar and Adalbert. [2]
Subsequently, on February 2 Otto was solemnly crowned Holy Roman Emperor by the Pope. Ten days later at a Roman synod, John, at Otto's desire, founded the Archbishopric of Magdeburg and the Bishopric of Merseburg, bestowed the pallium on the Archbishop of Salzburg and Archbishop of Trier, and confirmed the appointment of Rather as Bishop of Verona. The next day, the emperor issued a decree, the famous Diploma Ottonianum, in which he confirmed the Roman Church in its possessions, particularly those granted by the Donation of Pepin and by Charlemagne, and provided at the same time that in the future, the Popes should be elected in canonical form, though their consecration was to take place only after the necessary pledges had been given to the emperor or his ambassadors. [2] In essence, the Emperor was to be the guarantor of Papal independence, but to retain the right to confirm Papal elections. Historians debate, in terms of power and prestige, whether the Diploma Ottonianum was a prestigious advantage for the papacy or a political triumph for the emperor.
On 14 February the emperor marched out of Rome with his army to resume the war against Berengar and Adalbert. The Pope now quickly changed his mind, while Otto on his part pressed his imperial authority to excessive limits, and the brief alliance dissolved in wrangling. John sent envoys to the Magyars and the Byzantine Empire to form a league against Otto, who returned to Rome in November 963, and convened a synod of bishops that deposed John and crowned Pope Leo VIII, a layman, as pope.
The authenticity of the contents of this much-discussed document seems certain, even though, like other 10th century documents, the extant document seems to be only a duplicate of the original (Sickel, Das Privilegium Ottos I, für die römische Kirche, Innsbruck, 1883).
The Diploma Ottonianum was reconfirmed in the Diploma Heinricianum co-signed at Easter, 1020, by Pope Benedict VIII (1012–1024) and Emperor Henry II (1002–1024), meeting at Bamberg on the occasion of a papal journey.
Hanns Leo Mikoletzky calls it a "frequently overrated document", and says that Henry would have not been overly concerned with the problem of its many binding stipulations. "For the content of these privileges had taken on a rigid form, whose confirmation was perhaps a question of prestige for the papacy but no longer an exalted obligation for the German king. The recognition of the Church's property and rights which found expression there would surely have been advanced by the Curia in case of emergency on the ground of earlier confirmations without this gesture of Henry's...' (Mikoletzky, Heinrich II. und die Kirche, 1946, pp. 68–69, quoted by Miranda [3] ).
Starting from the reign of Pope Leo IX, the Holy See started to gradually free itself from imperial interference. The Emperor's privileges over the Pontiff's elections were formally rescinded by Pope Nicholas II through the papal bull In nomine Domini in 1059, which stated that the authority to elect a Pope exclusively belonged to a college of cardinals, meeting into a conclave.
Pope Sergius III was the bishop of Rome and nominal ruler of the Papal States from 29 January 904 to his death. He was pope during a period of violence and disorder in central Italy, when warring aristocratic factions sought to use the material and military resources of the papacy. At the behest of Theophylact I of Tusculum, Sergius seized the papal throne from Antipope Christopher, who in turn had deposed Pope Leo V. Sergius' reign was subsequently marked by Theophylact's influence. As pope, Sergius continued many ecclesiastical controversies of his predecessors, including conflict over Pope Formosus' legacy, annulling all ordinations made by the late pope, and the filioque controversy with eastern patriarchs. His pontificate was similarly marked by temporal conflicts, with Sergius' refusal to crown Berengar I of Italy as Holy Roman Emperor, and his support of Byzantine Emperor Leo VI the Wise's fourth marriage. Sergius also saw the restoration of the Lateran Palace.
The 960s decade ran from January 1, 960, to December 31, 969.
Year 962 (CMLXII) was a common year starting on Wednesday of the Julian calendar.
Year 963 (CMLXIII) was a common year starting on Thursday of the Julian calendar.
Pope Leo VIII was a Roman prelate who claimed the Holy See from 963 until 964 in opposition to John XII and Benedict V and again from 23 June 964 to his death. Today, he is considered by the Catholic Church to have been an antipope during the first period and the legitimate Pope during the second. An appointee of Holy Roman Emperor Otto I, Leo VIII's pontificate occurred after the period known as the saeculum obscurum.
The Papal States, officially the State of the Church, were a conglomeration of territories on the Italian Peninsula under the direct sovereign rule of the Pope from 756 to 1870. They were among the major states of Italy from the 8th century until the Unification of Italy, which took place between 1859 and 1870, and culminated in their demise.
The Donation of Constantine is a forged Roman imperial decree by which the 4th-century emperor Constantine the Great supposedly transferred authority over Rome and the western part of the Roman Empire to the Pope. Composed probably in the 9th century, it was used, especially in the 13th century, in support of claims of political authority by the papacy.
Pope John XII, born Octavian, was the bishop of Rome and ruler of the Papal States from 16 December 955 to his death in 964. He was related to the counts of Tusculum, a powerful Roman family which had dominated papal politics for over half a century. He became pope in his late teenage years or early twenties. In 960, he clashed with the Lombards to the south. Unable to control Rome easily, he sought help from King Otto I of Germany and crowned him emperor. John XII's pontificate became infamous for the alleged depravity and worldliness with which he conducted his office. He soon fell out with Otto, but died before Otto could succeed in his attempt to depose him.
King of Italy was the title given to the ruler of the Kingdom of Italy after the fall of the Western Roman Empire. The first to take the title was Odoacer, a barbarian warlord, in the late 5th century, followed by the Ostrogothic kings up to the mid-6th century. With the Frankish conquest of Italy in the 8th century, the Carolingians assumed the title, which was maintained by subsequent Holy Roman Emperors throughout the Middle Ages. The last Emperor to claim the title was Charles V in the 16th century. During this period, the holders of the title were crowned with the Iron Crown of Lombardy.
The Gregorian Reforms were a series of reforms initiated by Pope Gregory VII and the circle he formed in the papal curia, c. 1050–80, which dealt with the moral integrity and independence of the clergy. The reforms are considered to be named after Pope Gregory VII (1073–85), though he personally denied it and claimed his reforms, like his regnal name, honoured Pope Gregory I.
The Vatican Apostolic Archive, formerly known as the Vatican Secret Archive, is the central repository in the Vatican City of all acts promulgated by the Holy See.
Saeculum obscurum, also known as the Pornocracy or the Rule of the Harlots, was a period in the history of the papacy during the first two thirds of the 10th century, following the chaos after the death of Pope Formosus in 896 which saw seven or eight papal elections in as many years. It began with the installation of Pope Sergius III in 904 and lasted for 60 years until the death of Pope John XII in 964. During this period, the popes were influenced strongly by a powerful and allegedly corrupt aristocratic family, the Theophylacti, and their relatives and allies. The era is seen as one of the lowest points of the history of the papal office.
Lambert was the King of Italy from 891, Holy Roman Emperor, co-ruling with his father from 892, and Duke of Spoleto and Camerino from his father's death in 894. He was the son of Guy III of Spoleto and Ageltrude, born in San Rufino. He was the last ruler to issue a capitulary in the Carolingian tradition.
Berengar II was the King of Italy from 950 until his deposition in 961. He was a scion of the Anscarid and Unruoching dynasties, and was named after his maternal grandfather, Berengar I. He succeeded his father as Margrave of Ivrea around 923, and after 940 led the aristocratic opposition to kings Hugh and Lothair II. In 950 he succeeded the latter and had his son, Adalbert crowned as his co-ruler. In 952 he recognised the suzerainty of Otto I of Germany, but he later joined a revolt against him. In 960 he invaded the Papal States, and the next year his kingdom was conquered by Otto. Berengar remained at large until his surrender in 964. He died imprisoned in Germany two years later.
According to Roman Catholicism, the history of the papacy, the office held by the pope as head of the Catholic Church, spans from the time of Peter to the present day.
Adalbert was the king of Italy from 950 until 961, ruling jointly with his father, Berengar II. After their deposition, Adalbert continued to claim the Italian kingdom until his defeat in battle by the forces of Otto I in 965. Since he was the second Adalbert in his family, the Anscarids, he is sometimes numbered Adalbert II. His name is occasionally, especially in older works, shortened to Albert.
The Kingdom of Italy, also called Imperial Italy, was one of the constituent kingdoms of the Holy Roman Empire, along with the kingdoms of Germany, Bohemia, and Burgundy. It originally comprised large parts of northern and central Italy. Its original capital was Pavia until the 11th century.
Otto I, known as Otto the Great or Otto of Saxony, was East Frankish (German) king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the eldest son of Henry the Fowler and Matilda of Ringelheim.
From 756 to 857, the papacy shifted from the influence of the Byzantine Empire to that of the kings of the Franks. Pepin the Short, Charlemagne, and Louis the Pious had considerable influence in the selection and administration of popes. The "Donation of Pepin" (756) ratified a new period of papal rule in central Italy, which became known as the Papal States.
The Synod of Rome (963) was a possibly uncanonical synod held in St. Peter's Basilica from 6 November until 4 December 963, under the authority of the Holy Roman Emperor, Otto I to depose Pope John XII. The events of the synod were recorded by Liutprand of Cremona.
