The Holy Father who "will have much to suffer" is the same Pope mentioned by Pius X in his prophetic vision.
https://greatmonarch-angelicpontiffprophecies.blogspot.com/p/st-pius-x-1835-1914.html"I have seen one of my successors, by (the same) name, who was fleeing over the bodies of his brethren. He will take refuge in some hiding place; but after a brief respite he will die a cruel death."Pius X's name was Giuseppe (
Joseph) Sarto. The Pope he is referring to is
Joseph Aloysius Ratzinger. Ratzinger is the Pope who "fled" the papacy, and who prophetically said "Pray for me, that I may not
flee for fear of the wolves," in his
2005 Inauguration speech.
How do we know this? Because BXVI is the last pope listed by a "nickname" ("the Glory of the Olive") in St. Malachy's Prophecy of the Popes. No other previous papal claimants fit the profile.
Also, Conchita of Garabandal said, when she asked how many Popes there would be until "the end times," Our Lady told her there would be 4 more Popes, but one of them would reign for so short a time that he would not count. Conchita told that story right after the death of Roncalli. 4 Popes: Paul VI, JPI, JPII, BXVI. End times start with Bergoglio the Antipope, False Prophet, and, soon to be revealed as, the Antichrist.