Sancho IV of Pamplona

He was the eldest son of García Sánchez III and his wife, Stephanie, and was crowned king of Pamplona after his father was killed during the Battle of Atapuerca.

Remaining faithful to her husband's policies, she continued to support the monastery of Santa María la Real of Nájera.

Out of gratitude for "his friendship, his fidelity, his help and his council", Sancho gave Ramiro possession of Lerda, Undués and the castle of Sangüesa.

Years before, Sancho's father had managed to retain a series of frontier lands, including Bureba and Alta Rioja, which had been claimed by Ferdinand.

Sancho IV was assassinated in Peñalén (Funes), whence his nickname, by a conspiracy headed by his brother Ramón Garcés (el Fratricida, the Fratricide) and his sister Ermesinda.

Diploma issued by Sancho IV
Location of Sancho's assassination in Peñalen, with the confluence of rivers Aragon and Arga on the left far background