Ramiro was a subregulus and vassal of his brother. In 975 he tried to raid neighbouring Muslim territory, but was defeated in the Battle of Estercuel on 6 July. The precise date of his death is not recorded. A surviving document dated 981, but apparently misdated by a decade and actually from 991, reports that he had already died. Arabic sources report that he died in the Battle of Torrevicente in 981, where he and García Fernández of Castile fought Almanzur in support of Cordoban rebel Galib. He had two known children, sons Sancho and García, who succeeded him in turn.