Agnes of Harcourt is an important though little known thirteenth-century author. Born into a leading Norman noble family, she became an abbess at the new royal Franciscan abbey of Longchamp, founded just outside of Paris by Isabelle of France, sister of Louis IX. In the 1280s Agnes wrote a substantial biography of Isabelle of France, as well as a brief letter detailing Louis IX's involvement with the abbey. These texts were based on Agnes's first-hand...