The Chronicle of The Cid
II. In those days arose Rodrigo of Bivar who was a youth strong in arms and of good customs; and the people rejoiced in him, for he bestirred himself to protect the land from the Moors.
Now it behoves that ye should know whence he came, and from what men he was descended, because we have to proceed with his history. 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.
In the year of the Incarnation 1026 was Rodrigo born, of this noble lineage, in the city of Burgos, and in the street of St. Martin, hard by the palace of the Counts of Castille, where Diego Laynez had his dwelling. In the church of St. Martin was he baptized, a good priest of Burgos, whose name was Don Pedro de Pernegas, being his godfather: and to this church Rodrigo was always greatly affectionate, and he built the belfry tower thereof.
(Text from The Chronicle of The Cid, translated from the Spanish by Robert Southey, 1883, or so. The image is from Fyre and if you open it in Fyre you will see that it also contains all the image parameters.)