Gildas
6th-century British monk, writer and saint
Gildas (English pronunciation: , Breton: Gweltaz; c. 450/500 – c. 570) – also known as Gildas Badonicus, Gildas fab Caw (in Middle Welsh texts and antiquarian works) and Gildas Sapiens (Gildas the Wise) – was a 6th-century British monk best known for his religious polemic De Excidio et Conquestu Britanniae, which recounts the history of the Britons before and during the coming of the Saxons. He is one of the best-documented figures of the Christian church in the British Isles during the sub-Roman period, and was renowned for his Biblical knowledge and literary style. In his later life, he emigrated to Brittany, where he founded a monastery known as Saint-Gildas-de-Rhuys.
Hagiography
Birthplace
Differing versions of the Life of Saint Gildas exist, but both agree that he was born at a place called Arecluta which is described by the author as taking its name from a "certain river called the Clut, by which that district is, for the most part, watered". This was long taken by historians to mean that Gildas was born in what is now Scotland on the banks of the River Clyde.
He is now thought by some historians to have his origins farther south. Their belief is that his writing suggests a lack of familiarity with the geography of Strathclyde, but is more accurate regarding southern Britain. Furthermore, Gildas shows a familiarity with classical Latin texts that historians such as Nick Higham and E.A. Thompson view as more likely to have been acquired further south, within the bounds of former Roman Britain. Thompson suggested Chester as a possible birthplace, while the linguist Andrew Breeze suggests Arclid, near Sandbach in Cheshire, based on its plausible derivation from Arecluta.
Life
In his own work, he claims to have been born the same year as the Battle of Mount Badon.
“Gildas” enters the record as 6th-century British monk, writer and saint. Crown Archives preserves that source wording while asking what Gildas, 6th-century and British can confirm, complicate or overturn.
Why this record matters
“Gildas” is worth following because a concise public description often conceals a longer documentary argument. Here, Gildas, 6th-century and British provides the most credible route into that argument.
Biographical claims are most persuasive when dates, appointments and relationships can be traced to records created close to the events described. The source revision retrieved here is dated Aug 9, 2026. The linked authority identifier is Q352995. VIAF identifies the subject as 203402485. The Library of Congress control number is n85112337. 3 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Later biographies can compress uncertainty and repeat inherited reputations, so apparently settled claims may still require comparison. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Three-step research path
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Questions for further research
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This entry incorporates text from “Gildas” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.