Hilary of Poitiers was a 4th-century bishop, philosopher, and theologian who served the church in Gaul. Born in Poitiers to pagan parents, he was highly educated in Greek before converting to Nicene Christianity, a transition that led to the baptism of his wife and daughter. He is widely recognized for his vigorous opposition to Arianism, earning him titles such as the "Hammer of the Arians" and the "Athanasius of the West." His theological writings were instrumental in expressing the complexities of the Nicene faith in the Latin language.