Picture: Authors of Menologion of Basil II (circa 985 AC, Constantinople), Byzantine manuscript illuminators[1]: Pantoleon with Georgios, Michael the Younger, Michael of · Public domain · Wikimedia Commons
Marcellus of Acemata
Syrian monk
SaintResearchedByzantine EmpirePre-congregation
Feast: 29 December (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
401
Died
485
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
At Constantinople, Saint Marcellus, abbot of the monastery of the Acoemetae on the Bosphorus, in which the singing of the psalms was carried on day and night without interruption.
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 29 December as abbot of the monastery of the Acoemetae, where the psalms were sung day and night.
Sources
- Roman Martyrology, 29 December (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q3845708 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.