[In the Roman Missal, before 1435, there was no mention of S. Hilary; in the reformed Breviary of Cardinal Quignon, published by authority of Pope Paul III., S. Hilary was commemorated on Jan. 31st, the same day as that on which he was noted in the York Calendar, because Jan. 13th is the Octave of the Epiphany. Afterwards, however, the commemoration of S. Hilary was fixed for Jan. 14th, his name being inserted in the Martyrology on the 13th; but with this clause, "His festival is, however, to be celebrated on the morrow," so as not to interfere with the Octave of the Epiphany. The Sarum, Dominican, Belgian, and some of the German Calendars mark the 13th as the feast of S. Hilary. The Anglican Calendar also notes his name on this day. The Bollandists give his life on this day, though in the Roman offices the commemoration is on the morrow. His own writings, and the histories of his age, contain all the materials for his life.] S. Hilary was born at Poictiers in Gaul. There is some reason to believe that his family was illustrious in that country. His parents were pagans, and he was brought up in idolatry. He gives an account of his conversion to the faith of Christ in his book "On the Trinity." He was married before his conversion; and his wife, by whom he had a daughter, named Apra, was yet living when he was chosen Bishop of Poictiers, about the year 353; but from the time of his ordination he lived in perpetual continence. It is probable that S. Hilary was elected Bishop from the rank of a layman, as was often the case in the early ages, and received all orders by accumulation. He soon became renowned in Gaul as a preacher; and S. Martin, then a young man, was attracted by his name, and lived for a time at Poictiers as his disciple.