“Ranemirus Rex et…coniuncta Urraca Regina et filio nostro Rege Ordonio et fratre meo Rege Garsia” donated property to the church of Santiago by charter “VIII Kal Jun” dated to 844. The Chronicle of Alfonso III records that "his son Ordoño" succeeded King Ramiro "in the era 888 (850)".
He succeeded his father in 850 as ORDOÑO I King of Asturias. "Ordonius rex" donated property to Santiago de Compostela by charter dated 854. King Ordoño I confirmed "in ripas Istola…Orete" to "Purello" by charter dated 6 May 854, in the presence of "comites sancio, Domno Nuno, Kartia, Almonde…". Barrau-Dihigo cites a charter dated May 857 (summary only, in French) under which “Ordoño I roi...d´Espagne fils de Ramire I...et la reine Nuña” confirmed privileges to the church of Oviedo. In 859, he defeated Musa ibn Musa ibn Fortun, head of the Banu Qasi family, who had rebelled against Muhammad Emir of Córdoba and taken control of Zaragoza, Tudela, Huesca and Toledo. The Chronicle of Alfonso III records that King Ordoño I fortified the towns of León, Astorga, Tuy and Amaya. The Chronicon Burgense records that “Ordonius Rex” populated the town of León in 855. The Chronicon Albeldense records that “Ordonius” captured “Talamancam civitatem” and “regem eius Mozeror” in battle (although Ordoño allowed him to leave “cum sua uxore Balkaiz, in Petra sacra”), and also captured Albelda and killed its ruler “Muz in monte Laturcio”. He suppressed a Basque rebellion. His forces were defeated by Abd al-Rahman, son of Emir Muhammad, in 863 when "nineteen counts were killed in the battle". The Chronicon Albeldense records that “Lordomani” [Norsemen] invaded “Gallæciæ maritimis” and were killed “a Petro comite”.
The Chronicle of Alfonso III records that King Ordoño died "after completing the sixteenth year of his reign…afflicted by gout…in Oviedo" and buried "in the church of St Mary alongside the previous kings". The Chronicon Albeldense records that “Ordonius” died peacefully at Oviedo “VI Kal Jun 866”. The Sebastiani Chronicon records that "Ordonius…Rex" died "Oveto" and was buried "in Basilica S. Mariæ". 1