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Theodosia of Constantinople
Greek saint
SaintFull write-upByzantine EmpirePre-congregation
Feast: 29 May (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
700
Died
726
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Constantinople, Saint Theodosia, nun, who suffered martyrdom for having defended an ancient image of Christ that the emperor Leo the Isaurian had ordered removed from the Bronze Gate of his palace.
The miracles
There was never a formal cause: she has been honoured as a saint since before the Church's formal processes began.
Why that counted as sanctity
The Roman Martyrology remembers her on 18 July as a nun martyred for defending the image of Christ on the Bronze Gate against Leo the Isaurian.
Sources
- Roman Martyrology, 18 July (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q3983918 — dates, feast day and identifiers (CC0)
- English Wikipedia — Theodosia of Constantinople (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.