ABERYSTWYTH MANOR AND BOROUGH

Identity: confirmed — The TNA/MDR record F238253 identifies the Aberystwyth Manor and Borough record in Cardiganshire. Independent historical and archival evidence identifies the same entity as the Edwardian royal castle-town founded at the mouth of the Rheidol, initially called the new town or borough of Llanbadarn Fawr/Lampadervaur. The evidence distinguishes this royal borough and associated lordship from the older ecclesiastical settlement of Llanbadarn Fawr.
Representative point: 52.4133, -4.0898
Basis: documented_manor_site — Aberystwyth Castle, the documented Edwardian royal castle around which the borough and associated royal lordship were established. The coordinate is for the castle site at OS grid reference SN579815.
Point confidence: high
Boundary status: representative_point_only
Boundary period: Medieval and early modern manor and borough; surviving evidence reviewed does not establish a continuous, georeferenceable perimeter for the manorial land.
Boundary confidence: none
Boundary basis: The evidence establishes the castle-town and borough core, but does not provide a sufficiently explicit map or textual boundary description for the territorial extent of the manor itself. The medieval walled town covered approximately 28.5 acres excluding the castle, while a nineteenth-century parliamentary report describes the ancient borough as extending about two miles north-south and averaging three-quarters of a mile in breadth. Those borough measurements cannot safely be substituted for the manor or associated royal estate, and the extensive parish of Llanbadarn Fawr cannot be used as a proxy. The 1708 survey and later particulars may contain parcel-level evidence, but the accessible catalogue evidence does not expose a map or boundary schedule adequate to reconstruct a defensible polygon.
Sources:
- The National Archives, Manorial Documents Register: Aberystwyth Manor and Borough, F238253: https://discovery.nationalarchives.gov.uk/details/c/F238253 — Registry record for the exact manor and borough in Cardiganshire, with authority/reference GB/NNAF/M171392.
- Mapping the Medieval Townscape: a digital atlas of the new towns of Edward I — Aberystwyth: https://archaeologydataservice.ac.uk/archives/view/atlas_ahrb_2005/atlas.cfm?section=1&showmap=true&town=aberystwyth — Identifies Aberystwyth as Llanbadarn Fawr in Cardiganshire, a castle town chartered on 28 December 1277, with the medieval walled town measuring about 28.5 acres excluding the castle and approximately 1,250 feet by 1,250 feet.
- National Library of Wales, Aberystwyth charter, NLW MS 9429E: https://archives.library.wales/index.php/aberystwyth-charter — Catalogue record for photostat copies of the incorporation charter of the borough of Aberystwyth from Charter Roll 6 Edward I, m.4.
- Aberystwyth Castle, Cadw-listed building record: https://britishlistedbuildings.co.uk/300010313-aberystwyth-castle-aberystwyth — Provides the documented castle site, OS grid reference SN579815 and coordinates approximately 52.4133, -4.0898; records construction beginning in 1277 as part of Edward I's castle-building programme.
- Report upon the Proposed Municipal Boundary of the Borough of Aberystwith, House of Commons Papers 1837: https://www.aberystwythguide.org.uk/history/to1850.shtml — Reproduces the historical description that the ancient borough extended two miles from north to south and averaged three-quarters of a mile in breadth, and states that the borough was co-extensive with the chapelry of Aberystwyth, part of the extensive parish of Llanbadarn Fawr.
- National Library of Wales Archives and Manuscripts — Nanteos estate records: https://archifau.llyfrgell.cymru/index.php/informationobject/browse?collection=1846471&page=140&sort=endDate&sortDir=asc&topLod=0 — Catalogue evidence for later Nanteos estate material concerning William Edward Powell's title to the Manor of Aberystwyth, supporting the continuity of the later lordship but not supplying a complete historical boundary.
Warnings / uncertainty:
- The representative point is anchored to the Edwardian castle and royal foundation, not to the modern settlement centroid.
- No polygon is returned because the accessible evidence does not establish the historical manorial perimeter with adequate precision.
- The medieval walled-borough area and the nineteenth-century ancient-borough dimensions are not treated as the boundary of the manor or entire royal lordship.
- The parish of Llanbadarn Fawr is explicitly not substituted for the manor boundary.
- The 1708 survey, ministers' accounts, court records and later particulars are important leads for further archival boundary reconstruction, but their catalogue descriptions alone do not justify injecting coordinates for a polygon.