Barksted, William. Hiren: or, The Fair Greek (1611).

(perhaps) Edmund Ironside (perf. 1595).

Fabyan, Robert. The New Chronicles of England and of France (1516).

Knolles, Richard. The General History of the Turks (1603).

Speed, John. The Theatre of the Empire of Great Britain (1611).

REFERENCE : Randall Martin, ed. 'Edmund Ironside' and Antony Brewer's 'The Love-Sick King'. New York: Garland, 1991. 171-89.