Donation of Constantine

Lorenzo Valla, an Italian Catholic priest and Renaissance humanist, is credited with first exposing the forgery with solid philological arguments in 1439–1440,[4] although the document's authenticity had been repeatedly contested since 1001.

[1] Jus novum (c. 1140-1563) Jus novissimum (c. 1563-1918) Jus codicis (1918-present) Other Sacraments Sacramentals Sacred places Sacred times Supra-diocesan/eparchal structures Particular churches Juridic persons Philosophy, theology, and fundamental theory of Catholic canon law Clerics Office Juridic and physical persons Associations of the faithful Pars dynamica (trial procedure) Canonization Election of the Roman Pontiff Academic degrees Journals and Professional Societies Faculties of canon law Canonists Institute of consecrated life Society of apostolic life An alleged decree from Roman Emperor Constantine I, dated March 30 and not explicitly stating its year, incorrectly references the co-consul of Constantine I in his fourth term (315) as Gallicanus (317).

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.

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".

[6] In 1248, the Chapel of St Sylvester in the Basilica of the Santi Quattro Coronati was decorated with fresco showing the story of the Roman baptism and Donation of Constantine.

[17] In his Divine Comedy, written in the early 14th century, the poet Dante Alighieri wrote:[18] Ahi, Costantin, di quanto mal fu matre, non la tua conversion, ma quella dote che da te prese il primo ricco patre!

During the Middle Ages, the Donation was widely accepted as authentic, although Otto III, Holy Roman Emperor did possibly raise suspicions of the document "in letters of gold" as a forgery, in making a gift to the See of Rome.

[14] It was not until the mid-15th century, with the revival of Classical scholarship and textual criticism, that humanists, and eventually the papal bureaucracy, began to realize that the document could not possibly be genuine.

Valla further argued that papal usurpation of temporal power had corrupted the church, caused the wars of Italy, and reinforced the "overbearing, barbarous, tyrannical priestly domination.

The Florentine chronicler Giovanni Cavalcanti reported that, in the very year of Valla's treatise, Filippo Maria Visconti, Duke of Milan, made diplomatic overtures toward Cosimo de' Medici in Florence, proposing an alliance against the pope.

In reference to the Donation, Visconti wrote: "It so happens that even if Constantine consigned to Sylvester so many and such rich gifts – which is doubtful, because such a privilege can nowhere be found – he could only have granted them for his lifetime: the empire takes precedence over any lordship.

[23] The bulls of Nicholas V and his successors made no further mention of the Donation, even when partitioning the New World, though the doctrine of "omni-insular" papal fiefdoms, developed out of the Donation's vague references to islands since Pope Nicholas II's grant of Sicily to Robert Guiscard, was deployed after 1492 in papal pronouncements on the overlapping claims of the Iberian kingdoms in the Americas and Moluccas, including Inter caetera, a bull that resulted in the Treaty of Tordesillas and the Treaty of Zaragoza.

A 13th-century fresco of Sylvester I and Constantine the Great , showing the purported Donation ( Santi Quattro Coronati , Rome)
A 9th-century copy of the Donation of Constantine as part of the False Decretals by Pseudo-Isidore. The heading in red reads "Epistola Constantini Imperator ad Silvestrum Papam," or "Letter of Emperor Constantine to Pope Sylvester."
Lorenzo Valla