Sibyl – the name of a priestess whose responsibility was to make known the oracles of Apollo. There were a great number of legends concerning Sibyl or Sibyls. In Christian tradition twelve Sibyls were accepted as prophetesses announcing the birth of the Holy Infant. Their names indicate the place of their origin; they usually hold a book, though each one may have her own symbols.
See: Andrea del Castagno. The Camaean Sibyl.
Michelangelo frescoes in Sistine Chapel: The Sibyl of Delphi, The Libyan Sibyl.
Raphael The Sibyls;