After the crucifixion of Jesus in the second quarter of the 1st century AD, it is recorded in the Biblical book of the Acts of the Apostles that one of his twelve disciples, Simon known as Peter, a fisherman from Galilee, took a leadership position among Jesus' followers and was of great importance in the founding of the Christian Church.
The name Peter is "Petrus" in Latin and "Petros" in Greek, deriving from "petra" which means "stone" or "rock" in Greek.
It is believed by a long tradition that Peter, after a ministry of about thirty years, traveled to Rome and met his martyrdom there in the year 64 AD during the reign of the Roman Emperor Nero. His execution was one of the many martyrdoms of Christians following the Great Fire of Rome. According to Origen, Peter was crucified head downwards, by his own request.[9] The crucifixion took place near an ancient Egyptian obelisk in the Circus of Nero.[10] The obelisk now stands in Saint Peter's Square and is revered as a "witness" to Peter's death. It is one of several ancient Obelisks of Rome.[11]
According to tradition,
Peter's remains were buried just outside the Circus, on the Mons Vaticanus across the Via Cornelia from the Circus, less than 150 metres (490 ft) from his place of death. The Via Cornelia (which may have been known by another name to the ancient Romans) was a road which ran east-to-west along the north wall of the Circus on land now covered by the southern portions of the Basilica and Saint Peter's Square.
Peter's grave was initially marked simply by a red rock, symbolic of his name, but meaningless to non-Christians.[citation needed] A shrine was built on this site some years later. Almost three hundred years later, Old Saint Peter's Basilica was constructed over this site.[10]
[The present building was built on the same site between 1515 and 1650.]
On December 23, 1950, in his pre-Christmas radio broadcast to the world, Pope Pius XII announced the discovery of Saint Peter's tomb.[12] This was the culmination of 10 years of archaeological research under the crypt of the basilica, an area inaccessible since the 9th century. The burial place appears to have been an underground vault, with a structure above it believed to have been built by Pope Anacletus in the 1st century. Human remains were discovered, but it could not be determined if they were, in fact, the bones of the Apostle Peter. Indeed, the area now covered by the Vatican City had been a cemetery for some years before the Circus of Nero was built. It was a burial ground for the numerous executions in the Circus and for many years after the burial of Saint Peter many Christians chose to be buried near him.