The church officially recognizes St. Peter, the first pope, as the longest-serving, with at least 34 years. However, many ...

And the blog Clerical Whispers notes, “the last pope to use his baptismal name was Marcellus II in 1555.” ...

Today in History for April 10: In 1555, Pope Marcellus II was elected the 222nd in the line of Peter, but he didn't last a month, dying on May 1. He was the last pontiff to maintain his baptismal name ...