Page 16 - 43 Appendix

Pseudo-Isidore took as the basis of his

forgeries a collection of valid canons called

the Hispana Gallica Augustodunensis, thus

lessening the danger of detection, since

collections of canons were commonly made

by adding new matter to old. Thus his

forgeries were less apparent when

incorporated with genuine material. The

falsity of the Pseudo-Isidorian fabrications is

now incontestably admitted, being proved by

internal evidence, investigation of the

sources, the methods used, and the fact that

this material was unknown before 852.

Historians agree that 850 or 851 is the most

probable date for the completion of the

collection, since the document is first cited in

the Admonitio of the capitulary of Quiercy, in

857.