Castles / GB / Wales
Oystermouth Castle
Which definitions does it satisfy?
This dataset does not record whether something “is a castle”. It records a verdict against each named definition, with the reasoning that produced it.
| Definition | Verdict | Basis |
|---|---|---|
| Fortified residence | yes | Cadw report GM007 describes a keep, a gatehouse and curtain walls built 1256-66 for active defence, and states William de Braose regarded it as his most impressive residence (Edward I lodged there in 1284), with a hall block and a chapel added — a defensible work that was the private seat of a lord meets both halves of the band. |
| Enclosure fortification | unassessed | No source consulted so far speaks to this definition. Unassessed is not the same as no. |
| State fortification | unassessed | No source consulted so far speaks to this definition. Unassessed is not the same as no. |
| Palatial seat | unassessed | No source consulted so far speaks to this definition. Unassessed is not the same as no. |
| Revival and folly | unassessed | No source consulted so far speaks to this definition. Unassessed is not the same as no. |
| Popularly a castle | unassessed | No source consulted so far speaks to this definition. Unassessed is not the same as no. |
Facts
| Tradition | european medieval |
|---|---|
| Location | Mumbles, Swansea, Wales, GB |
| Built | Medieval |
| Confidence | medium |
| First recorded | 2026-07-21 |
| Last updated | 2026-07-22 |
In the registers
Where this structure appears in official inventories. This is what turns an individual record into evidence about a count.
- Cof Cymru — National Historic Assets of Wales —
GM007· Scheduled Monument — SiteType: Castle · entry
Location
Approximate. © OpenStreetMap contributors.
Notes
Upgraded from bulk register import to assessed against Cadw's full scheduled-monument report (sig-20260722-report-gm007). fortified_residence assessed yes from the described defensive fabric and the report naming it a lord's residence; all other bands omitted (unassessed) because the report does not speak to them. Confidence medium — one official report plus the register.
Sources
- Cof Cymru - National Historic Assets of Wales — Cadw, 2026-07-21
Register entry; original bulk-import source. - Scheduled Monument Full Report — Oystermouth Castle — Cadw, 2026-07-22
Full designation report; the evidence for the assessed verdict.
Signals
Raw per-source observations behind this record (2):
sig-20260721-cadw-gm007,
sig-20260722-report-gm007
Record file · dataset licensed CC BY 4.0 — see provenance.