Do you think the triumph of the Immaculate Heart of Mary is the same time as the time of the Monarch?
Yes I believe the catholic monarch will help usher in the period of peace, though it will require war and battles because the popes have waited too long to consecrate Russia and there are consequences for delaying good actions (as we all know from personal experience). The Holy Pope is supposed to consecrate the monarch as king of France (after France turns back to the Faith following violent social chaos). During the final battles where the good guys are outnumbered, the 3 days of darkness happens, causing most of the evil men in the world to die. What follows is the conversion of most men on earth, the return of the Church to normalcy/orthodoxy and a return of the Holy Roman Empire. This is the period of peace, the Age of Mary, the 6th age of the Church.
I never thought it would be necessary to explain to anyone besides Prots but There is NO SUCH THING as a 'Black Pope'-- complete mythology. And BTW-- The anti-pope Frank is an imposter who is neither Catholic, a Jesuit or the Pope. 
It’s just a term, bro. Just because it’s not theologically correct doesn’t mean the term is without meaning. If most people understand a term to mean the same thing then such meaning is valid, in a social sense. Prophecies use all kinds of meanings to convey their message, which is why they are hard to decipher.