A collection of canon law documents ascribed to ‘Isidore Mercator’ but really compiled c.850, probably in France. In its fullest form it contains three sections, the second and third of which are based on genuine canons of councils and decretals, much interpolated. The first section consists of letters in the names of Popes from Clement I to Miltiades (d. 314) and includes the Donation of Constantine; all are spurious. They show concern for the rights of diocesan bishops against their metropolitans and against the laity, and for Papal supremacy as their guarantee.
Subjects: Christianity — Medieval and Renaissance History (500 to 1500).