Wikipedia:
The earliest recorded sighting came on December 25, 800
when Charlemagne purportedly gave it to Pope Leo III when the
latter crowned the former Emperor. Charlemagne claimed
that it had been brought to him by an angel while he prayed at the
Holy Sepulchre (although another version of the story says it was a
wedding gift from the Byzantine Empress Irene). The Pope placed it
into the Sancta Sanctorum in the Lateran basilica in Rome with
other relics
The rediscovery, however, led to a theological clash with the
established Holy Prepuce of Calcata, which had been officially
venerated by the Church for hundreds of years; in 1900, the
Church solved the dilemma by ruling that anyone
thenceforward writing or speaking of the Holy Prepuce would be
excommunicated. In 1954, after much debate, the punishment
was changed to the harsher degree of excommunication, vitandi
(shunned); and the Second Vatican Council later removed the
Day of the Holy Circumcision from the Latin church
calendar, although Eastern Catholics still celebrate the Feast of
the Circumcision of Our Lord on January 1.[4]
Well, so a Holy Foreskin did exist though its most likely some
fake crap haha.
