He wrote a life of San Millan. He is reported to have encouraged Isidore of Seville in his encyclopaedic ambitions, and to have had a hand in the revision of his works. He was present at the councils of Toledo in 633, 636, and 638 and he responded on behalf of the Iberian clergy to PopeHonorius I's charge that they were neglectful of their duties. He went blind before death. He was buried in what is now the church of Nuestra Señora del Pilar in Zaragoza. He was succeeded as bishop of Zaragoza by Taius (Taio), who had been his pupil.