Ia -
| English | Cornish | Type | Parish | Elements | Link |
|---|---|---|---|---|---|
| Dynas Ia | Dinas Ia | Historic Site | St Ives |
Ia dinas (hillfort) |
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| St Ives | Pluw Ia | Civil Parish | St Ives |
pluw (parish) Ia |
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| St Ives | Porthia | Settlement | St Ives |
Ia porth (cove, gate, harbour) |
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| St Ives Bay | Baya Porthia | Coastal Feature | St Ives |
baya (bay) Ia porth (cove, gate, harbour) |
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| St Ives Head | Penn Dinas Ia | Coastal Feature | St Ives |
dinas (hillfort) Ia penn (head, end, top) |
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