Saint Severus was a bishop of Naples during the 4th and 5th centuries. He is considered the eleventh legitimate Catholic bishop of Naples, and the twelfth overall, succeeding Maximus. His episcopate ran from February 363 to April 29, 409, the traditional date of his death. Between the episcopates of Maximus and Severus, Zosimus, an Arian was established as Bishop, who was condemned as heretical by the Catholic Church.