Abercych is a village in the parish and community of Manordeifi, Pembrokeshire,[1] of fewer than 100 houses scattered mostly along the sides of a small lane that runs along the western slopes of the Cych valley.

It has a village hall[2] which hosts the Manordeifi Community Council meetings every other month,[3] and two public houses: The Penrhiw Inn and The Nag's Head; the latter used to have its own microbrewery.

Llewelin's grandson, Owen Davies of Westminster, sold the estate in 1753 to Thomas Lewis of Llwyngrawys, Llangoedmor, Cardiganshire.

[12][13] The Cych is a small river, which is connected with the realm of Annwn in the ancient Welsh tale of Pwyll Pendefig Dyfed, the first of the Four Branches of the Mabinogi.

There are several places on the upper reaches of the Cych that are seen as an entry point to the 'other worlds' (fairy realms), and there are some folk tales told by some local people about the magical nature of river and the valley.