It first appeared in the False Decretals, a ninth-century document attributed to the Spaniard Isidore of Seville.
It first appeared in the False Decretals, a ninth-century document attributed to the Spaniard Isidore of Seville. Treated as a part of canon law throughout the rest of the Middle Ages, it played a major role in the investiture controversy in the twelfth century. However, English bishop Reginald Pecock and the scientist Nicholas of Cusa contested its authenticity at the time of the Council of Basel, though it was rigorously disproven by the work of Lorenzo Valla. FTP, this forged document claimed that the first Christian Roman emperor had endowed the papacy with temporal power.
It first appeared in the False Decretals, a ninth-century document attributed to the Spaniard Isidore of Seville.
{Donation of Constantine}