later, anarchy and lawlessness propagated in the Kingdom of Murcia, causing the Alcaraz Pact signed with Castile in 1243, which required the submission to the Crown as a protectorate. Respecting and guaranteeing the possessions, and Muslim traditions in change of vassalage to the Castilian king. Once Alfonso X on the Castilian throne and after breaking some clauses of the Treaty, the Mudéjar population revolts, between 1264 and 1266. After suffocating the revolution, Alfonso X gave the Ricote Valley population the Jurisdiction of the city of Murcia, being so included in the territory of the city. With the death of the eldest son and Castilian heir, Fernando de la Cerda, the struggle began for the succession to the throne of Castile. The struggle was between Fernando's sons, the infants de la Cerda, and his uncle, son of Alfonso X, the Infante Don Sancho. Future Sancho IV, promised, in a document dated 25 March 1281, to reward the Order of Santiago by donating the Ricote Valley, including Negra (Blanca), if they help him in his struggle for the crown. When being proclaimed king in Seville 19 November 1285, Sancho IV fulfills his commitment and gave to the Order of Santiago the Ricote Valley, their neighbourhoods, villages and places, for the support provided (1). Peace did not last many years in the Ricote Valley because James II of Aragón invaded the Kingdom of Murcia, in 1296, to reward himself for the help given to the other party, i.e.| the Infants de la Cerda, in the struggle for succession of the throne against his uncle. During this occupation, Negra and its castle were given to the counselor Bernardo de Sarria, although the santiaguista commander of Ricote claimed to replace them to John Osores on 19 September 1303. The last time the name of Negra is stated in a document is in the year 1315. The change of the name Negra to Blanca probably took place between the years 1353 and 1362 by the influence of Dona Blanca de Borbón, Queen of Castile, who was abandoned by King Pedro I and defended by Fadrique, Master of the Order of Santiago, and by Sancho Sanchez de Moscoso, the santiaguista commander of Ricote (2). Years later, precisely in 1382, Blanca appeared for the first time under the name of Blanca. The Advancer (Counselor) of the Kingdom of Murcia, Martin Alonso de Valdivieso, required the freedom of a