Llanddew

Llanddew is a small village just north of Brecon in Powys, Wales. Historically it was a parish in Brecknockshire.
The church is believed to have been founded in the early medieval era. It is said that Aled (or Eluned), daughter of Brychan, took refuge at the church in 500 AD. However the earliest reference is in the 12th century, as Llando, the "church of god". By 1249 it had became Llandew.[1]
St David's Church still has some features dating to the 13th century, though most of the church hasn't survived rebuilding in the 15th and 16th centuries, and refurbishment in the 19th century.[1]
Llanddew castle was built by the bishops of St Davids as a fortified residence, used by the archdeacons of Brecon. Gerald of Wales lived there in the 12th/13th century, though the castle existed for some time earlier.[1]
There is also a large rectangular building (probably a hall at one point) and a well.[1]
It is a small parish, with no other notable settlements. As of 2011 the community (same area as the parish) had a population of 232.