Lindy Grant, University of Reading, has published Blanche of Castile, Queen of France (Yale University Press, 2017). Here is a description of the book's contents.
This is the first modern scholarly biography of Blanche of Castile, whose identity has until now been subsumed in that of her son, the saintly Louis IX. A central figure in the politics of medieval Europe, Blanche was a sophisticated patron of religion and culture. Through Lindy Grant’s engaging account, based on a close analysis of Blanche’s household accounts and of the social and religious networks on which her power and agency depended, Blanche is revealed as a vibrant and intellectually questioning personality.