| Name | Llanfihangel Ysgeifiog |
| Alt names | Gaerwen | source: hamlet in parish |
| Llanfihangel-Esceifiog | source: Family History Library Catalog |
| Llanfihangel-Pentre-Brew | source: Family History Library Catalog |
| Type | Parish (ancient), Civil parish |
| Coordinates | 53.223°N 4.286°W |
| Located in | Anglesey, Wales ( - 1974) |
| Also located in | Gwynedd, Wales (1974 - 1996) |
| Isle of Anglesey, Wales (1996 - ) |
| See also | Aethwy Rural, Anglesey, Wales | rural district, 1894-1974 |
