| Name: | Pentre Poeth Farm [Also: Llywell] | CISP No: | TCSTL |
| Place: | inc | Grid Ref: | SN 8700 2900 (GB)
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| Parish: | Trecastle | Stones: | 1 |
| County: | Brecknock (Brycheiniog) , Wales | Saint(s): | none |
| Site Type: | modern secondary |
Macalister/1945, 326: `The monument stood on the side of the road from Trecastle to Glasfynydd, upon a heap of stone'.