Saint Cyprian was a prominent early Christian bishop and martyr, born around 200 AD in Carthage, North Africa. He became the Bishop of Carthage around 248 AD and is known for his writings on church unity and the role of bishops. His most famous work, "On the Unity of the Church," emphasizes the importance of maintaining unity among Christians. Cyprian faced persecution during the reign of Emperor Decius, who sought to suppress Christianity. He was eventually arrested and executed around 258 AD. Saint Cyprian is venerated as a saint in both the Roman Catholic Church and the Eastern Orthodox Church, with his feast day celebrated on September 16.