David H. Lewis - There's actually widespread agreement among historians that someone named Jesus lived in 1st century Jerusalem and was executed by crucifixion. There's little argument that He lived. We can argue about whether He was God, but you invalidate yourself as a worthy opponent when you make claims that are simply untrue right at the outset.

https://www.theguardian.com/world/2017/apr/14/what-is-the-historical-evidence-that-jesus-christ-lived-and-died

http://strangenotions.com/an-atheist-historian-examines-the-evidence-for-jesus-part-1-of-2/

http://strangenotions.com/an-atheist-historian-examines-the-evidence-for-jesus-part-2-of-2/