Claims are easy to make. Anyone can make a claim, about anything. But, finding historical evidence to support them is a very different matter. This is particularly true for Kersey Graves in his The World's Sixteen Crucified Saviors. He fails to provide historical evidence for his claims, because there is no historical evidence for his claims. (In fact, Graves, finally, after a few hundred years of publication, is being rejected by atheists for his inaccuracy and his dishonesty). If a scholar or writer fails to produce evidence to support a claim, consider the possibility that the evidence doesn't exist, and consider the possibility that the claim is false.