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Concept
Donation of Constantine
Summary
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 8th century, it was used, especially in the 13th century, in support of claims of political authority by the papacy. In many of the existing manuscripts (handwritten copies of the document), including the oldest one, the document bears the title Constitutum domini Constantini imperatoris. The Donation of Constantine was included in the 9th-century Pseudo-Isidorean decretals.
Lorenzo Valla, an Italian Catholic priest and Renaissance humanist, is credited with first exposing the forgery with solid philological arguments in 1439–1440, although the document's authenticity had been repeatedly contested since 1001.
The text is purportedly a decree of Roman Emperor Constantine I, dated 30 March—a year mistakenly said to be both that of his fourth consulate (315) and that of the consulate of Gallicanus (317). In it "Constantine" professes Christianity (confessio) and entitles to Pope Sylvester several imperial insignia and privileges (donatio), as well as the Lateran Palace. Rome, the rest of Italy, and the western provinces of the empire are made over to the papacy.
The text recounts a narrative founded on the 5th-century Acts of Sylvester. This tale describes the sainted Pope Sylvester's rescue of the Romans from the depredations of a local dragon and the pontiff's miraculous cure of the emperor's leprosy by the sacrament of baptism. The story was rehearsed by the Liber Pontificalis; by the later 8th century the dragon-slayer Sylvester and his apostolic successors were rewarded in the Donation of Constantine with temporal powers never in fact exercised by the historical Bishops of Rome under Constantine.
In his gratitude, "Constantine" determined to bestow on the seat of Peter "power, and dignity of glory, vigor, and imperial honor," and "supremacy as well over the four principal sees: Alexandria, Antioch, Jerusalem, and Constantinople, as also over all the churches of God in the whole earth".
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