Pope Hilarius was the bishop of Rome from 461 to 468.
11 Facts About Pope Hilarius
Pope Hilarius later erected an oratory at the Lateran in honor of John the Evangelist, to whom he attributed his safe passage.
Pope Hilarius Leo had sent a letter with the legates to be read at the council.
Pope Hilarius vigorously opposed the condemnation of Flavian of Constantinople, pronouncing the single word in Latin, "Contradicitur", annulling the sentence in Leo's name.
Pope Hilarius continued to strengthen ecclesiastical government in Gaul and Spain.
Pope Hilarius sent an Encyclical advising the provincial bishops of Vienne, Lyons, Narbonne, and the Alps that Hermes was to remain titular bishop of Narbonne, but his episcopal faculties were withheld.
When Pope Hilarius heard of it, he deputed Leontius of Arles to summon a great synod of the bishops of several provinces to investigate the matter.
Pope Hilarius gave decisions to the churches of Hispania, which tended to operate outside the papal orbit in the 5th century.
Pope Hilarius erected several churches and other buildings in Rome, for which the Liber Pontificalis, the main source for information about Pope Hilarius, praises him.
Pope Hilarius erected a chapel of the Holy Cross in the baptistery, convents, two public baths, and libraries near the Basilica of St Lawrence outside the Walls.
Pope Hilarius built two oratories in the baptistery of the Lateran, one in honor of John the Baptist, the other of John the Apostle, to whom he attributed his safe escape from the Council of Ephesus, thus satisfying the question as to which saints the Lateran had been dedicated.