Liberius was the bishop of Rome who served from 352 until 366. Born in Rome around 310, he led the Church during a period of intense theological conflict regarding Arianism. During his leadership, he faced significant pressure from Emperor Constantius II, which resulted in his exile to Thrace for over two years. Despite these challenges and conflicting historical accounts regarding his theological stances, he is recognized as a saint in the Eastern Orthodox and Coptic traditions.