He appears for the first time in 921 confirming a donation to the Monastery of San Benito in Sahagún from which it can be assumed that he was probably born near the end of the 9th century.
[1] A loyal vassal of the Leonese monarchs, he confirmed several royal charters and appears with the title of Count from at least the year 950, governing as a tenente the Cea region from 939 onwards.
He probably played a relevant role in the Battle of Simancas and after this victory of the Leonese troops, collaborated with his brother, Oveco Núñez, Bishop of León in the repoblación of Salamanca.
Medievalist scholar Margarita Torres Sevilla-Quiñones de León believes that he could have been the son of Nuño Ordóñez, a son of King Ordoño I of Asturias and brother of Alfonso III,[3] which, according to the author, would explain the rapid rise of this lineage and its proximity to the royal house.
[6] He also had a sister named Gontrodo who married Ansur Fernández, Count of Monzón, the parents of Queen Teresa Ansúrez, wife of King Sancho I of León.