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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 |
| Castell Carndochan, Dolhendre | Castell Carn Dochan | Masonry Castle | masonry footings |
| Castell Cynfal, Bryn Crug | Cynfael; Towyn; Bryn y Castell | Timber Castle | earthwork |
| Castell Gronw, Bala | Llangower; Castell Gronw Bevr o Benllyn | Timber Castle | earthwork | Castell Gwain Goch, Penrhyndeudraeth | Deudraeth; Deudrait; Castell Aber Iâ; Portmeirion; Gwaun Goch | Timber Castle , Masonry Castle | cropmark/slight earthwork | Castell Prysor | Cwm Prysor | Timber Castle , Masonry Castle , Palace | earthwork |
| Castell y Bere | Caerberllan; 'a castle in Merionydd or Ardudwy', Teberri | Masonry Castle | masonry ruins/remnants | Castell y Bere Town Defences | Urban Defence | no visible | Crogen Motte, Llandderfel | Croegen; Cregan | Timber Castle | earthwork |
| Cymmer Castle, Llanelltyd | Cymer | Timber Castle | earthwork | Dernio | Castle of Edernion; Edeyrnion; Dernant; Dermant | Uncertain | uncertain |
| Domen Ddreiniog, Llanegryn | Tomen Ddreiniog; Thorny Motte; Tal y Bont; Talybont | Timber Castle , Palace | earthwork |
| Harlech Castle | Arlech; Hardelowe | Masonry Castle , Palace | major building | Meirionydd | Uncertain | uncertain | Meirionydd, Ardudwy | Uncertain | uncertain | Owain Glyndwrs House | Glyndyfrdwy | Fortified Manor House | earthwork |
| Owain Glyndwrs Mount | Glyndyfrdwy; Owen Glendower's Mound | Timber Castle | earthwork |
| Pen-uchar llan, Llanfor | Pen-Ucha'r Llan | Timber Castle | earthwork | Rug Park Motte | Dernio; Edernion | Timber Castle | earthwork | Tomen Gastell, Bala | Tomen y Castell; Hen Hafod; Llanfor | Timber Castle | earthwork |
| Tomen Las Castle Mound, Pennal | Y Domen Las; Towyn | Timber Castle , Palace | earthwork |
| Tomen y Bala, Bala | Timber Castle , Palace | earthwork | |
| Tomen y Mur, Maentwrog | Mur Castell; Heririmons | Timber Castle , Masonry Castle , Palace | earthwork | Towre Kenvyn | Caer y Bont; Pen y Twr; Twr Cynfyn; Hendwr; Kenuyn; Kynvyn | Uncertain | no visible |
| Afon Lliw Mound, Llanuwchllyn | Uncertain | earthwork | |
| Bala Town Defences | Urban Defence | no visible | |
| Barmouth Tower House | Abermo; Abermaw; Y Bermo; Ty Gwyn | Tower House | major building |
| Bryn yr Erye Enclosure | Timber Castle | uncertain | |
| Erwr Castell, Dyffryn Ardudwy | Erw'r Castell | Uncertain | no visible |
| Garth Rhiwaedog | Timber Castle | cropmark/slight earthwork | |
| Gwerclas | Llangar, The Mount | Timber Castle | cropmark/slight earthwork |
| Hendom Mound, Corwen | Timber Castle | earthwork | |
| Oakley Arms | Maentwrog; Mayn Turroc; Ffestiniog | Timber Castle | earthwork |
| Pen y Bryn y Castell | Uncertain | no visible | |
| Tomen y Castell, Gwyddelwern | Tomen gastell | Timber Castle | cropmark/slight earthwork |
| Ucheldre Mound, Corwen | Ucheldref | Timber Castle | cropmark/slight earthwork |
