(perhaps) Grafton, Richard. A Chronicle at Large (1568).

(perhaps) Higgins, John. The Mirror for Magistrates (1574).

Holinshed, Raphael. The Chronicles of England, Scotland and Ireland (1577).

(perhaps) Stowe, John. The Annals of England (1592).

REFERENCE : Peter Corbin and Douglas Sedge, eds. Thomas of Woodstock, or, Richard the Second, Part One. The Revels Plays. Manchester: Manchester University Press, 2002. 8-12.