Hilary of Poitiers

Hilary of Poitiers was born in the fourth century CE to wealthy pagan parents in Gaul. Latin was the language of Europe's ruling classes in the third century, yet Hilary's family paid for his education in Greek literature and philosophy. At an early age he converted to Christianity together with his wife and daughter. His training in Greek philosophy enabled Hilary to keep pace with the Eastern churches' debates about Christ and the Trinity, and when Arian bishops in Gaul challenged Nicean orthodoxy Hilary combined Greek and Latin rhetoric to argue against Europe's Arian Christians. For this he became known as "malleus arianorum," or "hammer of the Arians," as well as "Athanasius of the West." Popular acclaim made him bishop of Poitiers, and until his death in 398 CE Hilary ministered to his diocese while continuing to refine the connection between Greek and Latin theology on the Trinity.

Sources:"Saint Hilary of Poitiers" http://www.newadvent.org/cathen/07349b.htm