Archbishop Konrad Krajewski, the "Almoner of His Holiness," (a distributor of alms to the poor) recently gave an interview that "raised speculation that the Pope joins him on his nightly trips into Rome to give alms to the poor." And apparently, there's a good chance that the rumors are true.
From the HuffPo.
A knowledgeable source in Rome told The Huffington Post that "Swiss guards confirmed that the pope has ventured out at night, dressed as a regular priest, to meet with homeless men and women."
Krajewski earlier said, “When I say to him ‘I’m going out into the city this evening’, there’s the constant risk that he will come with me," and he merely smiled and ducked the question when reporters asked him point-blank whether the Pope accompanied him into the city.
It's not surprising for the Pope to do things like this. As it turns out, in his prior life as Cardinal Jorge Bergoglio, he often broke bread and sat for hours at night ministering to the downtrodden on the streets of his native Argentina.
Nocturnal wanderings for a pope are not completely unheard of. Pope John XIII is said to have occasionally popped out of the Vatican to appreciate the benighted beauty of Rome. And, reportedly, Pope Pius XII was said to shed his robes and dress as a Franciscan to help smuggle Rome's Jewish citizens to safety during WWII. More recently, Pope Francis' predecessor, Pope Benedict XVI left the Vatican unannounced to visit an art exhibit.