Do credible historians agree that the man named Jesus, who the Christian Bible speaks of, walked the earth and was put to death on a cross by Pilate, Roman governor of Judea?

There’s one word missing from your question that would have changed it significantly: “all”.

While there is a minority of historians who claim that there never was a Jesus, the vast majority believe there was a Jesus, but completely disagree to what extent all the tales about Jesus were actually discussing the same individual. This is primarily due to the scarcity of valid, reliable information regarding Jesus.

The Gospels

The four Gospels are essentially useless for proving the authenticity of Jesus because, simply put, they’re garbage for use as historical documents: written by non-witnesses...