Marcus of Moesia
martyr in Moesia
Feast: 3 July (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
In Moesia, in the lands lying today between Romania and Bulgaria, the commemoration of Saints Marcus and Mucianus, martyrs, who, for having refused to sacrifice to idols and having professed Christ all the more strongly instead, were beheaded for him.
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 3 July as a martyr beheaded in Moesia for refusing to sacrifice to idols and professing Christ the more strongly.
- Roman Martyrology, 3 July (Italian Bishops' Conference, Santo del giorno)
- Wikidata R0b243004 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.