Of all our churches Monknash is probably the simplest in style and
architecture. It is of early 12th century foundation, and the name of the village in which it is situated arose from the fact that it became a grange of Neath Abbey.
The church has been much restored and the architecture shows a number of influences, for example in the windows. The floor of the chancel is covered with the gravestones of local families of years gone by. The stone pulpit is entered through a cut-out in the chancel screen.
The church was altered in the restoration of 1890-1, the work involving the replacing of the box pews, and the installation of a wooden screen near the west end of the building.
The registers date back to 1754.