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

(perhaps) Geoffrey of Monmouth. Historia Regum Brittaniae (MS., wr. C12). 8.21-3.

Hall, Edward. The Union of the Two Noble and Illustrate Families of Lancaster and York (1548).

Holinshed, Raphael. The Chronicles of England, Scotland and Ireland (1577). 1587 edtn.

(perhaps) Stowe, John. The Chronicles of England (1580).

REFERENCE : Michael Hattaway, ed. King Henry VI, Part One. Cambridge: Cambridge University Press, 1990. 55-7.