By Froissart and Waurin it is distinctly stated that the crown was arched in the form of a cross.
De Monstrelet and Jehan de Waurin are most useful for his military career, T.
Basin and Jehan Waurin should also be consulted (these three are published by the Societe de l'Histoire de France).
The most important contemporary sources are Stevenson's Wars of the English in France, Whethamstead's Register, and Beckington's Letters (all in Rolls Ser.), with the various London Chronicles, and the works of Waurin and Monstrelet.