,
The Donation of Constantine.
Stanze di Raffaello,
Vatican City During the
Middle Ages, the Donation was widely accepted as authentic, although
Holy Roman Emperor Otto III did possibly raise suspicions as to the document's authenticity due to its making a gift to the See of Rome. 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.
Cardinal Nicholas of Cusa declared it to be a forgery and spoke of it as an
apocryphal work. Later, the humanist and scholar
Lorenzo Valla argued in his
philological study of the text that the language used in manuscript could not be dated to the 4th century. The language of the text suggests that the manuscript can most likely be dated to the 8th century. Valla believed the forgery to be so obvious that he suspected that the Church knew the document to be inauthentic. 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." Contemporary opponents of papal powers in Italy emphasized the primacy of civil law and civil jurisdiction, now firmly embodied once again in the Justinian
Corpus Juris Civilis. 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." Later, scholars further demonstrated that other elements, such as Sylvester's curing of Constantine, are legends which originated at a later time.
Wolfram Setz, a recent editor of Valla's work, has affirmed that at the time of Valla's refutation, Constantine's alleged "donation" was no longer a matter of contemporary relevance in
political theory and that it simply provided an opportunity for an exercise in legal rhetoric. 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. ==See also==