St. Julian the Apostate was a Roman Emperor who ruled from 361 to 363 AD. He is known for his efforts to restore paganism in the Roman Empire after the rise of Christianity. Julian was raised as a Christian but later rejected the faith, earning him the title "Apostate." His reign was marked by attempts to revive traditional Roman religious practices and reduce the influence of the Christian church. Despite his efforts, Julian's reign was short-lived, as he died in battle against the Persians in 363 AD. His policies and beliefs sparked debates about religion and governance in the empire, influencing later discussions about the role of Christianity and paganism in Roman society.