She was the daughter of a wealthy Christian, Paphnutius, who with his wife brought up Euphrosyne in piety. Not wishing to marry, she secretly fled her home and its wealth, dressed herself in men’s clothing and entered a monastery using the name of Smaragdus.
There she lived in asceticism for thirty-eight years. She only revealed her identity on her death bed. Her father Paphnutius became a monk in the same monastery, and entered into repose ten years after his daughter.