Matthew for one, and the apostle John. They were contemporaries of Jesus and were eyewitnesses to his life recorded in the new testament books of Matthew and John respectively. These were their eyewitness accounts.
Many historians do not consider Matthew to be an eye witness. It is actually thought to be someone else writing to a specific audience.
Also, many historians do not believe John wrote the gospel as well. They tend to date it c. 80-90.
Luke can't be confirmed to be an eye witness.
Without digging to much you'll find that scholars tend to believe that most of the gospels were written by second generation Christians. Also, if there is archaeological evidence supporting the existence of a historical Jesus or any of the apostles, I am not aware of it.
My only point of my commentary was that you can't prove the origins of the bible. Wouldn't reason be a better belief system. Heck, I could be wrong, I really don't think God cares if you believe in the bible, what version, or what is holds. However, nobody's believe in the bible has any more legitimate claim that what I just stated. The wars and persecutions that pushed their belief as fact, was in fact fraudulent.
I'm at odds with the Catholic church on this view...perhaps that is obvious.