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Jéron de Noordwijk
SaintResearchedPre-congregation
Feast: 17 August (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
850
Died
856
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
In Frisia, in the territory of present-day Holland, Saint Jéron, priest and martyr, who tradition says was killed by some pagan Normans.
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 17 August as a priest and martyr in Frisia.
Sources
- Roman Martyrology, 17 August (Italian Bishops' Conference, Santo del giorno)
- Wikidata Q2906249 — dates, feast day and identifiers (CC0)
Checked against the sources listed on 22 September 2026. Corrections welcome.