In the 17th century French game Le Jeu de la Guerre, the ace of hearts represented the cavalry.
For example, in his book The Border Legion, he describes the character Joan Randle as an Ace of Hearts, after she "outwit[s] and outtalk[s] her would-be-seducer, outlaw Kells".
These uses of the ace of hearts by Grey utilize the many symbolic meanings of the card including intimidation, eroticism, and death.
[3]: 92 Referring to the Jesuits, the author of The true history of Pope Joan says: "a certain prince of ours did compare unto them a game of cardes, in which the gamesters like loadem play and bring them forth last that are of most price, to beat downe the adverse play: or like the ace of hearts at Mawe (the game which is with us called Rumstich)".
The narrative goes on to say: "the oblong white ceiling, with this scarlet blot in the midst, had the appearance of a gigantic ace of hearts".