Pope Hilarius (or Hilary) was the bishop of Rome from 19 November 461 to his death on 29 February 468. In 449, Hilarius served as a legate for Pope Leo I at the Second Council of Ephesus. His opposition to the condemnation of Flavian of Constantinople incurred the enmity of Dioscurus of Alexandria, who attempted to prevent him from leaving the city. Hilarius was able to make his escape and returned to Rome by an indirect route. He later erected an oratory at the Lateran in honor of John the Evangelist, to whom he attributed his safe passage. Much of his pontificate was spent in maintaining ecclesiastical discipline in conformity with canon law, and in settling jurisdictional disputes among the bishops of both Gaul and Spain. Early career Hilarius was born in Sardinia. As archdeacon under Pope Leo I, he fought vigorously for the rights of the Roman See. In 449, Hilarius and Bishop Julius of Puteoli served as papal legates to the Second Council of Ephesus. Pope Leo had sent a letter with the legates to be read at the council. However, the head notary declared that the emperor's letter should be read first and as the Council proceeded, Leo's letter ended up not being read at all. Hilarius vigorously opposed the condemnation of Flavian of Constantinople, pronouncing the single word in Latin, "Contradicitur", annulling the sentence in Leo's name. For this he incurred the displeasure of Pope Dioscorus I of Alexandria, who presided over the synod. Flavian died shortly afterwards, on 11 August 449, from injuries incurred from a physical assault by the followers of Dioscurus. According to a letter to Empress Pulcheria collected among the letters of Leo I, Hilarius apologized for not delivering to her the pope's letter after the synod, but owing to Dioscurus of Alexandria, who tried to hinder his going either to Rome or to Constantinople, he had great difficulty in making his escape in order to bring to the pontiff the news of the result of the council. Flavian and Eusebius of Dorylaeum appealed to the pope, and their letters were probably taken by Hilarus to Rome. Papacy As pope, he continued the policy of his predecessor, Leo I, who, in his contest with Hilary of Arles, had obtained from Emperor Valentinian III a famous rescript of 444 (called Novel 17) confirming the supremacy of the bishop of Rome. Hilarius continued to