Lorenzo Bianchi

Eric J. Lyman 12-05-2013

St. Peter in Prison (The Apostle Peter Kneeling). Photo courtesy Rembrandt [Public domain], via Wikimedia Commons/RNS

When Pope Francis cradled the small box said to contain nine bone fragments believed to be the mortal remains of St. Peter, the first pope, he fanned the flames of a long-standing debate over the authenticity of ancient church relics.

Most old churches in Italy contain some ancient relic, ranging from a glass tube said to hold the blood of St. Gennaro in Naples to a section of what is believed to be Jesus’ umbilical cord in the Basilica of St. John of Lateran in Rome. Perhaps the most famous religious relic in Italy — the Shroud of Turin, believed by many to be Jesus’ burial cloth — will go on display again in early 2015, and Turin Archbishop Cesare Nosiglia this week invited Pope Francis to attend its public debut.

But St. Peter’s bones are of particular importance, since they are the very basis — both architecturally and spiritually — for Catholicism’s most important church. And yet the bones were only discovered during a series of excavations in the 1940s, almost 1,900 years after Peter died, in either 64 or 67 A.D.