Eusebius of Vercelli was a 4th-century bishop from Sardinia who served as the first leader of the church in Vercelli. He is primarily remembered for his staunch defense of the divinity of Jesus against Arianism, working alongside figures like Athanasius. After refusing to condemn Athanasius at a council in Milan, he faced multiple exiles in Syria, Cappadocia, and Egypt. Throughout his hardships, he remained a dedicated defender of orthodox Christian doctrine and a pioneer of communal clerical life.