This last date, 1265, corresponds to a document found in the 'Book of Loans' of Salamanca cathedral, which records the result of a new conflict: the battle between the dioceses of Salamanca and Segovia for the possession of the parishes to the east of the Trabancos; an area that hitherto had been accorded little worth. Salamanca had made use of the frontier struggles to take possession of the towns of Medina del Campo, provoking a conflict of interest since the region was under Castilian rule, and Salamanca belonged to the crown of León. In fact, the Salmantinos created new parishes, like "Siete Iglesias de Trabancos" in 1167, and Alaejos in 1185.