Pope Damasus I (c. 300 – December 11, 384) was the Bishop of Rome from 366 until his death. Born into a Christian family in Rome, he served as a deacon under Pope Liberius. After Liberius' death, a disputed election led to conflict with rival Ursinus, but Damasus ultimately secured the papacy with imperial support. He is best known for commissioning Saint Jerome to produce the Latin Vulgate Bible, which became the standard text for Western Christianity. He also promoted the veneration of martyrs, restored Roman catacombs, and convened synods to defend the Nicene Creed against Arianism. His reign strengthened the authority of the Roman see, laying foundations for the papal office's future development.