Marcus HAERETICUS
14. HAERETICUS. Isidore of Seville, in speaking of Idacius Clarus, and Sulpicius Severus, in his Historia Sacra (2.61), mention Marcus, a native of Memphis, as being eminently skilled in magic, a Manichaean, or perhaps personally a disciple of Manes, and the teacher of the persecuted heresiarch Priscillian. He is noticed here as having been by Jerome and others confounded with the earlier heresiarch of the same name. [No. 13.] (Isidor. Hispal. De Script. Eccles. 100.2; Sulp. Sever. l.c.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.