D'Urfé, Honoré. Astrée, Seconde Partie (1610). 'Histoire d'Eudoxe, Valentinian, et Ursace.'

Procopius. History of the Wars. Bks. 3-4.

REFERENCE : Robert K. Turner, Jr., ed. 'Valentinian.' The Dramatic Works in the Beaumont and Fletcher Canon. Gen. ed. Fredson Bowers. 10 vols. Cambridge: Cambridge University Press, 1966-96. 4.263.