MarcusHAERETICUS.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.)