Longinus
The name of the soldier who pierced Christ's side with a longche 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 "correct" Latin name Lancea Longini).
A form of the name Longinus occurs on a miniature in the Rabula Gospels (conserved in the Laurentian Library, Florence), which was illuminated by one Rabulas in the year 586. In the miniature, the name is written in Greek characters above the head of the soldier who is thrusting his lance into Christ's side. This is one of the earliest records of the name, if the inscription is not a later addition.
Read more about this topic: Holy Lance