The name Jesus or its equivalent was a common one in that region at that time. It is therefore rational to believe that a man named Jesus did exist. Many of them in fact. The Jesus of the bible is a whole different deal. The loaves, fishes, healing, and all those other miracles are difficult to accept as real world events. He could have been an itinerant preacher that was practiced in prestidigitation. Son of God? That one is hard to swallow.