Tacitus was a Roman historian, who was born in 54 CE. While writing about the account of Nero persecuting the early Christians as scapegoats for Nero’s own political problems, Tacitus explained in his account that the Christians are the followers of a Christ. "Christus, the founder of the name, was put to death by Pontius Pilate, procurator of Judea in the reign of Tiberius..."
He also said that this belief in the Christian Christus was a "pernicious superstition."
He wrote all of this in 115 CE, based on the few details that were available to him at the time.
Not only was Tacitus not a contemporary witness for a real Jesus, he was a historian who stated that Christianity’s Christus is a pernicious superstition. Go figure!