May 29 Fast Leavetaking of Midfeast. Virgin Martyr Theodosia of Tyre (307-308). Repose of Bl. John of Ustiug, Fool-for-Christ (1494). Virgin Martyr Theodosia, Nun, of Constantinople (726-730). Icon of the Most-holy Theotokos, “SURETY OF SINNERS”. SAINT THEODOSIA Saint Theodosia of Tyre lived during the third and fourth centuries. Once, during a persecution against Christians, which had already lasted for five years, the seventeen-year-old Theodosia went up to condemned Christian prisoners in