No likeness on file
Menedemus
martyr burned at sea off Nicomedia
SaintResearchedDate unknown
Feast: 5 September (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
—
unknown
Died
—
unknown
Beatified
—
not on record
Canonised
—
not on record
Who they were
At Nicomedia in Bithynia, in present-day Turkey, the holy martyrs Urban, Theodore, Menedemus and their companions, both clergy and lay people, who by order of the emperor Valens were put on a boat for their Catholic faith and burned at sea.
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 5 September as a martyr of Nicomedia put on a boat for his Catholic faith by order of the emperor Valens and burned at sea.
Sources
- Roman Martyrology, 5 September (Italian Bishops' Conference, Santo del giorno)
- Wikidata R1fde3f06 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.