Sancho Ramírez followed his father's practice, not using the royal title early in his reign even though his state had become fully independent.

This changed in 1076, when Sancho IV of Navarre was murdered by his own siblings, thus prompting a succession crisis in this neighboring kingdom that represented Aragon's nominal overlord.

Sancho Ramírez was elected King of Navarre, while he ceded previously contested western provinces of the kingdom to Alfonso.

[4] Sancho contracted his first marriage in c. 1065, to Isabella (died c. 1071), daughter of Count Armengol III of Urgel.

They had one known child: Sancho Ramírez remarried around 1071 with Felicia of Roucy, daughter of Hilduin IV, Count of Montdidier.