Picture: Thomon · CC BY-SA 4.0 · Wikimedia Commons

Ceraunus

French bishop

SaintPre-congregation

Feast: 27 September (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)

Born

550

Died

621

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Ceraunus (Céran) was the Bishop of Paris from 606 to about 614.

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 Q5063875 — dates, feast day and identifiers (CC0)
English Wikipedia — Ceraunus (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.