Ye are to know therefore, that after the treason which King Don Ordono the Second committed upon the Counts of Castille, that country remained without a chief: the people therefore chose two judges, of whom the one was called Nuno Rasuera, and the other Layn Calvo, who married Nuno's daughter, Elvira Nunez.

From Nuno Rasuera King Don Ferrando descended, and from Layn Calvo, Diego Laynez, who took to wife Dona Teresa Rodriguez, the daughter of Don Rodrigo Alvarez, Count and Governor of Asturias, and had by her this Rodrigo.