This is a small plain chapel of ease in Is Clydach parish, set on the north bank of the Usk opposite Sennybridge. It is plainly a post-medieval building, presumably eighteenth or nineteenth century, and the earlier walling apparent in the north wall need not be of any antiquity. The chapel is depicted on the 1st edition OS County series (Brecknock. XXVI.12 1886) as 'Capel Rhyd-y-Briw' and is now shown as 'Rhydybriw Church'.
The chapel, dedication unknown, consists of an undivided nave and chancel with a south porch and north vestry. It has plain pointed windows, a single bell set in a slight projection of the west gable and an iron cross on the east gable. In 1970 the interior was plain and bare, with dark pews. It stands within a small roughly square graveyard containing a tomb of 1766 and stones of 1778 and 1769.

Source: NMR Site File

John Wiles 15.02.08