Picture: Oblomov2 · CC0 · Wikimedia Commons
Saint Marcouf
Abbot of Nantus in the Cotentin
SaintFull write-upBenedictinesPre-congregation
Feast: 1 May (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
490
Died
588
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
On the island of Nanteuil in Brittany, Saint Marcouf, hermit, then monk and abbot of that monastery.
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 1 May as a hermit who became monk and abbot of the monastery of Nanteuil.
Sources
- Roman Martyrology, 1 May (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q685409 — dates, feast day and identifiers (CC0)
- English Wikipedia — Marculf (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.