What we don’t know about Joan of Arc could fill a server farm. Yet the basic facts of her life are simple enough that they’ve continuously inspired children’s books. A teenage peasant who never held a formal position of power, she is more famous today than the French king she fought for or the English king she opposed. (Charles VII, to us, is simply the king who met Joan.) She has spawned movies, plays, fashion lines, advertisements and 1920s flapper hairstyles. Christians, feminists, transgender activists, neopagans, leftists, the French Resistance and Marine Le Pen supporters have all revered (and repurposed) her story.