Marguerite de Navarre (1492-1549) was the sister and wife to kings and a pivotal influence in sixteenth-century France. An astute politician and diligent humanist, she was a champion of gender equality and the evangelical reform movement, which recognized that the clergy was more concerned with maintaining the church's power than ministering to the faithful. As the years passed and the glitter of life at court waned, however, Marguerite came to realize...