A relic described as the Holy Lance in Rome is preserved beneath the dome of Saint Peter's Basilica, although the Catholic Church makes no claim as to its authenticity. The first historical reference to a lance was made by the pilgrim Antoninus of Piacenza (AD 570) in his descriptions of the holy places of Jerusalem, writing that he saw in the Basilica of Mount Zion the crown of thorns with which Our Lord was crowned and the lance with which He was struck in the side:, although there is uncertainty about the exact site to which he refers.: A lance is mentioned in the so-called Breviarius at the Church of the Holy Sepulchre. The alleged presence in Jerusalem of the relic is attested by Cassiodorus (c. 485-585) as well as by Gregory of Tours (c. 538-594), who had not actually been to Jerusalem.