Holy Lance
The name of the soldier who pierced Christ's side with a "lonchē" is not given in the Gospel of John, but in the oldest known references to the legend, the apocryphal Gospel of Nicodemus appended to late manuscripts of the 4th century "Acts of Pilate", the soldier is identified as a centurion and called Longinus (making the spear's Latin name "Lancea Longini").
Flagellation of Christ
Flagellation at the hands of the Romans is mentioned in three of the four canonical Gospels: John 19:1, Mark 15:15, and Matthew 27:26, and was the usual prelude to crucifixion under Roman law. None of three accounts are more detailed than John's "Then Pilate took Jesus and had him flogged" (NIV). Luke's comparable account, Luke 22:63-65 is of the High Priest's guards beating and mocking Jesus. In the Passion of Christ the episode precedes the Mocking of Christ and the Crowning with thorns, which the Gospels happened at the same time or immediately after. Unlike the flogging, these were not part of the normal Roman judicial process.