Marcus Eremita
Marcus Eremita, Mark the Ascetic or Marcus the Ascetic was a Christian theologian, saint, and ascetic writer of the fifth century AD.
Mark is rather an ascetic than a dogmatic writer. He is content to accept dogmas from the Church; his interest is in the spiritual life as it should be led by monks. He is practical rather than mystic, belongs to the Antiochene School and shows himself to be a disciple of John Chrysostom.
Identification
Various theories about his period and works have been advanced. According to Johannes Kunze, Mark the Hermit was superior of a laura at Ancyra; he then as an old man left his monastery and became a hermit, probably in the desert east of Palestine, near St. Sabas. He was a contemporary of Nestorius and died probably before the Council of Chalcedon (451).
Nicephorus Callistus (fourteenth century) says he was a disciple of John Chrysostom.Cardinal Bellarmine thought that this Mark was the monk who prophesied ten more years of life to the Emperor Leo VI in 900. He is refuted by Tillemont.