Picture: Giogo · CC BY-SA 3.0 · Wikimedia Commons

Mellonius

Bishop of Rotomagus

SaintPre-congregation

Feast: 22 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)

Born

229

Died

314

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Saint Mellonius (229–314) was an early 4th-century Bishop of Rotomagus (now Rouen) in the Roman province of Secunda Provincia Lugdunensis (now Normandy in France). He is known only from a 17th-century 'Life' of little historical value, meaning the historicity of his existence is uncertain.

Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.

The miracles

Limited information available on this saint.

Why that counted as sanctity

Limited information available on this saint.

Sources

Wikidata Q767764 — dates, feast day and identifiers (CC0)
English Wikipedia — Mellonius (CC BY-SA)

Not yet written up in full: no Church source with an account of this person has been found yet. The name, dates and step come from Wikidata and are not yet checked against Church records.