Mary, Countess of Blois was countess of Blois (1230-1241). Mary was born into the family of Walter of Avesnes and Margaret of Blois.[1]
References
- ↑ (FR)Henri Platelle, Présence de l'au-delà: une vision médiévale du monde, (Presses Universitaires du Septentrion, 2004), 284.
