Saint Caesarius (469-542) served as Archbishop of Arles from 502 to 542, and he was the papal vicar for Gaul and Spain at the same time. He is considered to be one of the truly relevant writers of the patristic age. In his book Mirabilis liber prophecias revelationes, he correctly predicted the French Revolution. He also gave this prophecy of the Great Pope and Grand Monarch:

"When the entire world, and in a special manner France, and in France more particularly the provinces of the north, of the east, and above all, that of Lorraine and Champagne, shall have been a prey to the greatest miseries and trials, then the provinces shall be succored by a prince who had been exiled in his youth, and who shall recover the crown of the lilies.

"This prince shall extend his dominion over the entire universe. At the same time there will be a great Pope, who be most eminent in sanctity and most perfect in every quality. This Pope shall have with him the Great Monarch, a most virtuous man, who shall be a scion of the holy race of the French kings. This Great Monarch will assist the Pope in the reformation of the whole earth. Many princes and nations that are living in error and impiety shall be converted, and an admirable peace shall reign among men during many years, because the wrath of God shall be appeased through their repentance, penance, and good works. There will be one common law, only one faith, one baptism, one religion. All nations shall recognize the Holy See of Rome, and shall pay homage to the Pope. But after some considerable time fervor shall cool, iniquity shall abound, and moral corruption shall become worse than ever, which shall bring upon mankind the last and worst persecution of the Antichrist, and the end of the world.

"There shall be a great change and as great an effusion of blood as in the time of the Gentiles: the Universal Church and the whole world shall deplore the ruin and capture of that most celebrated city, the capital and mistress of France; the altars and temples shall be destroyed; the holy virgins after experiencing many outrages, shall fly from their monasteries: the pastors of the Church shall abandon their pulpits and the Church itself be despoiled of all temporalities.