Possidius (fl. 400 CE) served as Catholic bishop at Calama in Numidia (modern Guelma, Algeria). He was a close colleague of Augustine of Hippo and worked with him to discredit Donatism and Pelagianism. Possidius assisted in the development of legal strategies to prompt government action against religious rivals and visited the imperial court at least twice to advocate for African Catholic interests. He was with Augustine at Hippo’s monastery when Augustine die…