Pope Damasus I served as the Bishop of Rome from 366 to 384 AD. He is known for his efforts to promote the authority of the papacy and for his role in the development of early Christian doctrine. Damasus I was a strong supporter of the Nicene Creed, which was established at the First Council of Nicaea in 325 AD. Damasus I is also recognized for commissioning the Latin Vulgate translation of the Bible, which became the standard version used in the Western Church. His papacy was marked by a focus on the importance of the Roman Church and the veneration of martyrs, contributing to the growth of Christian identity in the Roman Empire.