No , beso, there is no contemporary evidence. Let's assume the character is entirely fictional. If so, the first relayer of this story, Mark, was writing of a fictional character who, he tells us, died. The death related is only about 40 years from Mark's telling of it. It is as though a novelist told of someone dying in 1970 and everyone who heard or read this fiction in 2013 believed the fictional person to be real, to have been living in the 1960s, and not just living but having a following, with himself so worrying to the government and the Church that he was put to death in 1970. How likely is that?
Historical figures have often been associated with miraculous events and credited with miraculous powers. Even living beings have been so credited; the curing of scrofula, "the king's evil" is one example, the belief in witches another. Put in the context of the times, that a person as dangerous to the established order and orthodoxy of a religion, as Martin Luther was in his time, and who conceivably might, ultimately, prove a focus for Jewish nationalism and rebellion and hence threaten the peace and government of the province, should emerge and end up being put to death is not surprising And that stories of his miraculous deeds and resurrection should emerge is no surprise either.