No likeness on file
Marcianus of Constantinopolis
saint
SaintResearchedPre-congregation
Feast: 10 January (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
—
unknown
Died
480
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Constantinople, Saint Marcianus, priest, diligent in adorning churches and in giving help to the needy.
The miracles
There was never a formal cause: he has been honoured as a saint since before the Church's formal processes began.
Why that counted as sanctity
The Roman Martyrology remembers him on 10 January as a priest of Constantinople who adorned churches and helped the needy.
Sources
- Roman Martyrology, 10 January (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q2177116 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.