(perhaps) Davenant, William. The Tragedy of Albovine, King of the Lombards (1629).

Diaconus, Paulus. De Gestis Langabardorum (wr. 8th century).

Thomas, William. The History of Italy (1549).

REFERENCE : G.E. Bentley. The Jacobean and Caroline Stage. 6 vols. Oxford: Oxford University Press, 1941-68.