Between around 700 BC and 100 AD an Iron Age Hill Fort was constructed along the ridge of Coed Craig Ruperra.

About 1100 AD a huge heap of earth for a Norman type motte or castle was piled up on the top of the ridge.

An estate plan of 1764 describes a two storey summerhouse on the top of Craig Ruperra, which may have been built at the same time as the castle more than a century earlier.