1. Elias Tormo, Las viejas series icónicas de los reyes de Espana (Madrid: Blass y Cia, 1916 [1917]), p. 191.
2. Isabel Beceiro Pita and Ricardo Córdoba de la Llave, Parentesco, poder y mentalidad: la nobleza castellana, siglos xii-xv (Madrid: CSIC, 1990), pp. 68–71
3. Heath Dillard, Daughters of the Reconquest: Women in Castilian Town Society, 1100–1300 (Cambridge, UK: Cambridge University Press, 1984), pp. 26–29.
4. See Bernard F. Reilly, The Kingdom of León-Castilla under King Alfonso VI, 1065–1109 (Princeton: Princeton University Press, 1988), and The Kingdom of León-Castilla under King Alfonso VII, 1126–1157 (lPhiladelphia: University of Pennsylvania Press, 1998).
5. Marion Facinger, “A Study of Medieval Queenship: Capetian France 987-1237,” Studies in Medieval and Renaissance History 5 (Lincoln: University of Nebraska Press, 1968), pp. 3–47.