(1) succeeded Abilius as bishop of Alexandria in 98, and was succeeded by Primus in 139 (Euseb. H.E. 3, 21; 4,. 1). According to the legendary "Acts of St. Mark," Cerdo was one of si-he presbyters whom St. Mark ordained (Bollansd, Acts Sacetorum, April 25).
(2) A Manichaean, taught his doctrines in A.D. 275, according to Jo. Malalas (Chronicles 12 p. 399), Hody conjectures that this may possibly be Manes himself.