All manuscript references are from The National Archives (TNA), London, unless otherwise noted. All translations in the text are also my own unless otherwise noted. Where there is considerable variation in the name used for a particular figure, I have decided to use the one which is most frequently used for them, rather than complete consistency with using the Spanish, French, or English version of their name. Some variation in usage has been deliberate to avoid confusion when several figures had the same first name, such as Blanca of Navarre, queen of France, who is referred to as Blanche to avoid confusion with her niece and grandniece with the same name.
Titles are given in full in the bibliography.