Life and Monastic Foundation
According to the synaxarion, Eustolia was born to pious Roman parents and entered a monastery at a young age, giving herself to fasting and vigils. She later left Rome for Constantinople in order to venerate the holy churches of the capital, and there entered one of its women's monasteries, where her strict manner of life won her wide esteem.
Sopatra met Eustolia at the church of the Most Holy Theotokos at Blachernae. Moved by the encounter, she begged Eustolia to receive her as a spiritual daughter and guardian of her soul, and submitted her will to Eustolia's direction. The tradition relates that Sopatra converted a palace building given to her by her father into a monastery, which the two women organized together with other pious companions under a demanding monastic Rule.
After Eustolia's death in 610, Sopatra succeeded her as head of the community and guided it for a further fifteen years until her own repose in 625.