Remember the stories of medieval relics? Any time a town or principality needed some positive PR, someone would dig up some old bones and proclaim them the long lost wrist or shin of some very dead saint; the visionaries went further and proclaimed they'd found the hip of some venerable Jew from the days of Jesus. The Venetians, never shy or reticent, went so far as to claim they had all of St.Mark, stolen in his entirety from Alexandria, if I'm not mistaken.
Then modernity came along and we grew out of such antics. Nobody would engage in such capers today. Would they.