Picture: Photo taken in 1999 by Jean Leclercq (http://users.skynet.be/leclercq/lr7.htm) · Public domain · Wikimedia Commons

Foillan

Irish saint

SaintIrelandPre-congregation

Feast: 31 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)

Born

600

Died

655

Beatified

—

not needed: before formal processes

Canonised

By tradition

recognised before formal processes began

Who they were

Saint Foillan (Faélán, Faolán, Foélán, French: Feuillen) is an Irish saint of the seventh century.

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 Q1374816 — dates, feast day and identifiers (CC0)
English Wikipedia — Foillan (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.