The Historical Jesus

[Sheldon]

If it was obvious, no one would find it jarring. Anonymous, though, is another good term.

Points for using the secondary meaning of a little-used term, if that's what you were going for. Not that I have room to throw stones at someone for being pedantic. Carry on.

Tbh I didn't see how the primary definition could be applied to a written text? So I set aside my usual rule, but duly noted, I often take exception when people use secondary definitions and don't clarify.