Someone stole the body!

[Pat Mustard]

Yes, and even worse is that history and archaeology cannot identify any place called "Arimathea."   And even worse than that the usage X of Y is not consistent with the Jewish aristocracy which would have been the patronymic X son of Y.

Um yes we can, from the reference in the gospels. Which is pretty much all the evidence that exists for the naming of a lot of fictional localities.

Fixed your post.