Life
According to the synaxarion, Mary and her father Eugene lived at the beginning of the sixth century in Bithynia, in northwestern Asia Minor. After the death of his wife, Eugene resolved to withdraw to a monastery. His daughter, unwilling to be separated from him, put on male clothing so that she might accompany him, and together they entered a monastery not far from Alexandria, where she was tonsured under the name Marinus.
Living as a monk, Marinus was distinguished by humility and obedience and grew accomplished in the ascetic virtues. After her father's death she intensified her labors, and the synaxarion relates that she received the gift of healing those afflicted by unclean spirits.
The defining episode of her life was a false accusation. An innkeeper's daughter, who had sinned and become pregnant, named the monk Marinus as the father of her child. Mary did not deny the charge. She accepted expulsion from the monastery and lived in poverty near its wall; when the child was born and left in her care, she raised the boy as her own. After a period of penance she was readmitted to the community.