I find myself recalling the anecdote a musician told, at a concert we attended, of having visited Ireland, and just outside the airport, meeting a huckster with a skull, supposedly that of Brian Boru.  This musician was tickled with the sales pitch, and bought the skull.  She mentioned the interesting reactions going through customs.

A year or so later, she was in Ireland again, and as fate would have it, ran into the same huckster (apparently you don't quickly forget somebody selling skulls).  He had another skull, smaller than the previous one, which he was also selling as the skull of ... Brian Boru.  She talked with briefly as he made his sales pitch, and then told him she'd purchased the skull of Brian Boru from him the year before.

His response:  "This skull is from when he was younger."

Exhumation, removal of bones, hair, cloth -- so much for "may he rest in peace."  

And more sarcastically, it's amazing we adore Jesus, without any verified relics.