Gurthiern
Welsh-born Breton saint
Feast: 3 July (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
Gurthiern (also Guthiern, Gunthiern, and Gunthiernus) was a Welsh prince. According to the Vita sancta Gurthierni, he became a hermit in Brittany and founder of an abbey at Quimperlé. He is a Catholic and Orthodox saint with a feast day on 3 July.
Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.
The miracles
Limited information is available on this saint so far.
Why that counted as sanctity
Limited information is available on this saint so far.
- Nominis (Conference des eveques de France) - Saint Gunthiern — Welsh prince turned hermit in Brittany, founder of the first monastery at Quimperle; feast 3 July. Nominis, the French bishops' conference saints database, records him and says his veneration is kept in four chapels - Clohars-
- Wikidata Q1659568 — dates, feast day and identifiers (CC0)
- English Wikipedia — Gurthiern (CC BY-SA)
Not yet written up in full. The Catholic source above names this person; the name, dates and step come from Wikidata and are not yet checked against Church records.