“Who is still a matter of faith.”
They have narrowed down that chain of faith to about 200 A D, so far.
An overwhelming and wonderful floral scent met workmen and archaeologists when they recently re-opened, after something like seven hundred years remaining basically undisturbed, the muliple-edificed Aedicule within the Church of the Holy Sepulchre, all the way down to the bare stone on which the body of Jesus Christ was laid.
This answered a question as to what was meant, the last time it was opened, when an observer recorded his impression, that it became obvious to all present that this was certainly the very tomb of Jesus.
Before that, the inference take was that an overabundance of ancient Christian graffiti promoted the observer to make that observation.