Friday 13th, St. Hilary of Poitiers, bishop and doctor of the Church. c.315 — c.367. He was elected (c.353) bishop of Poitiers and distinguished himself by his stand against heresy. In exile (356-359) by order of Emperor Constanius, he used his time to write. His major works include De Trinitate, a study of the Trinity.
Roman Catholic Diocese of Cloyne, County Cork, Ireland.
