Tacitus, a great historian of Rome
Suetonious, another historian
Pliny the Younger, a leader of the Roman Emire
Epictetus
Lucian, wrote an entire work about Jesus
Aristides
Galenus
Lampridius
Dio Cassius, wrote a whole book attacking Christianity
Emeritus
Annianus
Marcellinus
Eunapius
Zosimus
Porphyry, Hieracles, and Julian the Apostate wrote whole works.
Tactitus, the most famous Roman historian, wrote of Jesus:
founded the Christian sect
put to death by Pontius Pilate
Christianity began in Judea and spread despite Christ's death
Christianity encountered much hatred and vast multitudes of Christians were put to death in Rome by Nero as late as A.D. 64
Jerusalem temple was destroyed fulfilling Jesus' prophecy, Josephus wrote of those events too.
Celsus gives far more details about the life of Christ...but I ain't typing all that, research a bit!
Skeptics Answered by D James Kennedy, p 73-75