St. Malachy was an 12th century Irish Monk to whom were attributed several miracles and an apocalytic vision of the final 112 Popes now known as the Prophecy of the Popes. He was the first Irish saint to be canonised by Pope Clement III in 1199.
Malachy was summoned to Rome in 1139 by Pope Innocent II to receive two wool palliums for the metropolitan sees of Armagh and Cashel.
While in Rome, Malachy experienced a devine vision of future popes, which he recorded as a sequence of cryptic Latin phrases describing the reign of the final remaining 112 Popes. This manuscript was then deposited in the Vatican Secret Archives, and forgotten about until its rediscovery in 1590.
The prophecies were first published in 1595 by a Benedictine named Arnold de Wyon in his Lignum Vitæ, a history of the Benedictine order. Wyon attributed the prophecies to Saint Malachy, the 12th‑century Archbishop of Armagh. He explained that the prophecies had not, to his knowledge, ever been printed before, but that many were eager to see them. Wyon includes both the alleged original prophecies, consisting of short, cryptic Latin phrases, as well as an interpretation applying the statements to historical popes up to Urban VII, which Wyon attributes to Alphonsus Ciacconius.
The interpretation of the prophecies for popes provided by Wyon involves close correspondences between the mottos and the popes' birthplaces, family names, personal arms, and pre-papal titles. For example, the first motto, Ex castro Tiberis (from a castle on the Tiber), fits Pope Celestine II's birthplace in Città di Castello, on the Tiber. According to historians, Saint Malachy's Prophecy of the Poes has been highly accurate and predictions for recent popes has raised much concern.
The last of the 112 Latin phrases states
" In the final persecution of the Holy Roman Church, there will sit Peter the Roman, who will pasture his sheep in many tribulations, and when these things are finished, the city of seven hills will be destroyed, and the dreadful judge will judge his people. The End.
Many believe this refers to the destruction of Rome.