Early Life and the Bride-Show
Kassiani was born in Constantinople, between about 805 and 810, into a wealthy and noble family. The most famous episode of her early life is her part in a bride-show arranged for the emperor Theophilos by the Empress-Dowager Euphrosyne. By the account, Theophilos, struck by her beauty, remarked that through a woman came forth the baser things, alluding to Eve; Kassiani answered that through a woman also came forth the better things, alluding to the birth of Christ through the Virgin Mary. Disconcerted by her boldness, the emperor passed her over and chose Theodora as his bride.
Whatever the historical kernel of the story, Kassiani turned from the court to the monastic life. By the year 843 she had founded a convent in the western part of Constantinople, near the Constantinian walls, and served as its first abbess.