Llandeilo
town in Carmarthenshire, Wales

Llandeilo (Welsh pronunciation: [ɬanˈdeilɔ] ) is a town and community in Carmarthenshire, Wales, situated where the River Towy is crossed by the A483 on a 19th-century stone bridge. At the 2021 census the community had a population of 1,784. It is adjacent to the westernmost point of the Brecon Beacons National Park. The town is served by Llandeilo railway station on the Heart of Wales Line.
In 2021, The Sunday Times called the town one of the top six places to live in Wales. The newspaper praised the town as a ‘sophisticated shopping destination and a great showcase for local arts and crafts’.
History
Early history
Roman soldiers were active in the area around Llandeilo around AD 74, as evidenced by the foundations of two castra discovered on the grounds of the Dinefwr estate. The fortifications measured 3.85 hectares and 1.54 hectares, respectively. Roman roads linked Llandeilo with Llandovery and Carmarthen. A small civil settlement developed outside the gates of the fort and may have continued in use as the embryonic town after the Romans left in around AD 120.
Begin with the source’s own compact description: “Llandeilo” is town in Carmarthenshire, Wales. The dossier treats that line as a proposition to test through Llandeilo, town and Carmarthenshire, not as a finished interpretation.
Why this record matters
The phrase “town in Carmarthenshire, Wales” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Jun 13, 2026. The linked authority identifier is Q2204179. VIAF identifies the subject as 133729873. The Library of Congress control number is n83141522. Authority coordinates are 51.884, -3.999. 3 of 4 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2021.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Llandeilo”, its source revision and the description used here.
- Expand the search: follow Llandeilo primary sources, Llandeilo archive and Llandeilo research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Llandeilo”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Llandeilo” 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.