"Giovanni Francesco Barbieri. (Guercino, 1591-1666.) Ferrara. The Samian sibyl. 24 x 43. Original in the Uffizi Gallery, Florence, painted in 1651 for Prince Mathias, one of the Medicis. The Latin verse on a page of the open book means: 'Hail, chaste maiden, who hath suffered much.' The word sibyl itself means 'will or counsel of god,' and was the ancient doric Greek name (Sios-Boulla), given to several prophetic women whose history has reached our times in the shape of myths, if indeed they ever existed at all. The Samian Sibyl is supposed to have lived in the time of Isaiah, on the island of Samos, and to have prophesied there."
A Catalogue of Paintings in the Gallery of D.W. Powers, Rochester, N.Y. with Explanations and Sketches of Painters by C.C. Merriman. Rochester, N.Y.: E.R. Andrews, Book and Job Printer, Aqueduct Street, 1877.