There is an ancient legend that under the name of Pope John the Eighth was hiding a women. She was said to occupy this position for several years. It is an interesting fact that her existence wasn’t denied even by the heads of Roman Catholic Church during the Middle Ages and the serious dis-confirmations were provided only in the late seventeenth century. In the Cathedral in Sienna her sculpture bust can be found among the depictions of the Popes. At the present time the opinion of Vatican is clear. The clergy suppose that it was just a legend aimed to cut up the respect of the Roman Catholic Church.