Hilary of Poitiers (Latin: Hilarius Pictaviensis; c. 310 – c. 367) was Bishop of Poitiers and a Doctor of the Church. He was sometimes referred to as the "Hammer of the Arians" (Malleus Arianorum) and the "Athanasius of the West". His name comes from the Latin word for happy or cheerful. In addition to his important work as bishop, Hilary was married and the father of Abra of Poitiers, a nun and saint who became known for her charity. Source: Wikipedia (en)