(perhaps) Cervantes, Miguel de. Novelas Exemplares (1613). 'La Fuerza de la Sangre.'

(perhaps) Robinson, Richard, ed. Gesta Romanorum (f. pr. 1502).

(perhaps) Seneca the Elder. Controversiae. 5.1.

REFERENCE : Robert Kean Turner, ed. 'The Queen of Corinth.' The Dramatic Works in the Beaumont and Fletcher Canon. Gen. ed. Fredson Bowers. 10 vols. Cambridge: Cambridge University Press, 1966-96. 8.5, 8, n10.