of 99.9% of all the humans who ever lived prior to the 18th century.
Most people down through the ages were illiterate, and thus left no records themselves, and were for the most part unrecorded as individuals by any government or religious entity of the time. This certainly would have been true of a peasant or semi-skilled craftsman such as Jesus, living in obscurity for most of his life. Even his execution probably wouldn't have been noted--the Romans executed thousands of slaves involved in the rebellion led by Spartacus, how many of their names were recorded? Did those executed slaves then not exist?
And even if such evidence of their existence did at one time exist, it may well have been lost in the intervening centuries. Most of Homer's works didn't survive. He supposedly wrote many longer epics, and hundreds of "Homeric hymns"--but only the Odyssey and the Iliad have come down to us.
Come to think of it, what archaeological or other evidence do we have that Homer existed? I don't think his name even appears in writing until at least a century or more after his alleged life and death.
As I've said before, absence of evidence is not necessarily evidence of absence.
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