Llanddaniel Fab (or Llanddaniel-fab; formerly Llanddeiniol-fab) is a village and community in the south of Anglesey, Wales. At the 2001 census it had a population of 699, increasing to 776 at the 2011 census. The village has its own community council. Amenities include a primary school (Ysgol Parc y Bont). The village is on National Cycle Route 8 (Lôn Las Cymru).
Geology It stands at the highest point of a low ridge running SW/NE: this is one of a series of Precambrian rock units oriented in that direction.
Prehistory, Roman conquest The village is near the prehistoric monument of Bryn Celli Ddu (Black Grove Hill) which was constructed in the Late Neolithic period. There was an Iron Age settlement between Bryn Celli Ddu and Llanddaniel Fab, on a ritual landscape of more ancient Neolithic and Bronze Age tombs. Its excavator speculates that the Iron Age inhabitants may have taken advantage of the ancient messages from the dead that were imparted to the druids through their dreams;Woods, Mike (2026). The Dark Side of the Tomb: a landscape study utilizing archaeological excavation, multi-modal geophysical survey and imaging techniques of the Neolithic and Early Bronze Age monuments on the Isle of Anglesey, North Wales. Manchester Metropolitan University. Thesis. https://doi.org/10.83056/mmu.32483082.v1 p.56 accessed 19 September 2026 the village may have been a sacred grove of the Druids and a target of the first Roman invasion of Anglesey.Woods, Mike (2026). The Dark Side of the Tomb: a landscape study utilizing archaeological excavation, multi-modal geophysical survey and imaging techniques of the Neolithic and Early Bronze Age monuments on the Isle of Anglesey, North Wales. Manchester Metropolitan University. Thesis. https://doi.org/10.83056/mmu.32483082.v1 p.291 accessed 19 September 2026
Modern history In the east of the community, by the Menai Strait, stands the country seat of the Marquess of Anglesey, Plas Newydd, parts of which date from the 14th century. The house has been owned by the National Trust since 1976.
In the 16th century the Welsh poet Catrin ferch Gruffudd ap Hywel lived here. Her poems are preserved, including an awdl with a religious theme written in 1555.
During the 2001 United Kingdom foot-and-mouth crisis, many sheep and cattle were slaughtered in the area.A BBC timeline of the crisis
The village was struck by an F1/T2 tornado on 23 November 1981, part of the record-breaking nationwide tornado outbreak on that day.
Church
St Deiniol's Church is a small 19th-century church in the village. The first church in this location is said to have been established by St Deiniol Fab (to whom the church is dedicated) in 616. The current building incorporates some material and fittings from its predecessor, which probably dated from about the 16th century. The church is no longer in use, and the village is now served by a church in Llanfairpwllgwyngyll. It is a Grade II listed building, a designation given to "buildings of special interest, which warrant every effort being made to preserve them", in particular because it is regarded as "a good example of a simple 19th-century rural church".
References
External links A Vision of Britain Through Time British Listed Buildings Genuki Geograph Llanddaniel Office for National Statistics