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Certain |
Probable |
Questionable or Doubtful |
Rejected |
|
Confidence is a statement of the site as a medieval fortification or palace | ||||
Name |
Alternative Name(s) |
Type |
Remains |
Aberffraw llys and motte | Timber Castle , Palace | earthwork |
| Beaumaris Castle | Masonry Castle | major building | |
| Beaumaris Town Walls | Urban Defence | masonry footings | Cae Llys, Rhosyr | Llys Rhosyr | Palace | earthwork | Caer Gybi, Holyhead | Treffynnon | Masonry Castle , Fortified Ecclesiastical site | major building |
| Castell Aberlleiniog | Castell Llienawg; Aberllienawg; Castle in Anglesey; Castell Leiniog | Timber Castle , Uncertain | earthwork | Castell Bryn Gwyn | Castle of King Olaf; Bon y Dom | Timber Castle | earthwork | Castell Crwn | Llanrhwdrys; Castell Rhonyn | Timber Castle | earthwork | Castell Trefadog | Porth Trefadog | Timber Castle | earthwork | Llanallgo manor of Bishop of Bangor | Palace | no visible | Llanfaes Town Defences | Urban Defence | no visible | Lleiniog near Penmon | Timber Castle | earthwork | Treffos manor of Bishop of Bangor | Palace | no visible |
| Castell Porth Wen | Uncertain | no visible | |
| Dinas Cadnant | Dinas near Plas Cadnant | Timber Castle | earthwork |
| Tregarnedd, Llangefni | Tre-Garnedd Moated Site | Fortified Manor House | uncertain |
| Ynys Cefni, Llangefni | Timber Castle | no visible |
