1038-1076. King of Navarre 1054-1076. Son of King Garcia, nephew of King Ferrando. He was assasinated at the instigation of Alfonso. However Navarre managed to stay out of Alfonso's hands when the nobility there made Sancho Ramirez of Aragon their king.
Alfonso used the pretext of the Moorish King of Zaragoza's allegiance to Sancho Garcia to invade Aragon. Alfonso entered into a conspiracy with Sancho Garcia's brothers and Sancho Garcia was murdered at Rueda in 1076. However the rest of the Navarran nobility had no wish to be part of Alfonso's empire and instead made Sancho Ramirez of Aragon their king, effectively blocking Alfonso's expansion into Christian territory to the east.
The manner in which he divided his lands was this: he gave to Don Sancho the kingdom of Castille as far as to the river Pisuerga, on the side of Leon, with the border, which included the dioceses of Osma, and Segovia, and Avila, and on the side of Navarre as far as the Ebro, as he had won it from his nephew Don Sancho Garcia, King of Navarre.
And the King sent the Infante Don Ramiro his cousin, and the Infante Don Sancho, son to the King of Navarre, and Count Don Gonzalo Salvadores, and Count Don Nuno Alvarez, and many other knights with them; and they came to the Castle, and Almofalez said he would not open the gates to them, but if the King came he would open to him.
But the Infante Don Sancho entered, and Don Nuno, and Don Gonzalo, and fifteen other knights; and as soon as they were within the gate, the Moors threw down great stones upon them and killed them all.
The bodies were ransomed, seeing that there was no remedy, the Castle being so strong, and Don Gonzalo was buried in the Monastery of Ona, according as he had appointed in his will; and the Infante Don Sancho with his forefathers the Kings of Navarre, in the royal Monastery of Naxara.
He of Navarre hight Don Ramiro, and he was the son of King Don Sancho, him who was slain at Rueda; and he married with Dona Elvira, the elder: and the Infante of Aragon who married Dona Sol, the younger, hight Don Sancho, and was the son of King Don Pedro.