Lactantius,
Ante-Nicene Fathers Vol. VII, The Divine Institutes…
(1885)
“ Marcus Varro, than whom no man of greater learning ever lived, even among the Greeks, much less among the Latins, in those books respecting divine subjects which he addressed to Caius Cæsar the chief pontiff, when he was speaking of the Quindecemviri, [2] says that the Sibylline books were not the production of one Sibyl only, but that they were called by one name Sibylline, because all prophetesses were called by the ancients Sibyls, either from the name of one, the Delphian priestess, or from their proclaiming the counsels of the gods. ”
