First-wave feminism
In her book The Second Sex, Simone de Beauvoir wrote that the first woman to "take up her pen in defense of her sex" was Christine de Pizan. Christine de Pizan wrote in the 15th century. Feminists Heinrich Cornelius Agrippa and Modesta di Pozzo di Forzi worked in the 16th century. Marie le Jars de Gournay, Anne Bradstreet and François Poullain de la Barre's Equality of sexes came out in 1673.