sentences:  During the Roman Conquest of Britain, Roman cavalry attacked the 'defenceless of Dinas', but were routed when thousands heeded the call of the Druids.Morgan concludes that "coch" refers to the blood shed by the defeated Roman soldiers.These theories have been queried more recently, as it has been shown that the area known as Gilfach Goch and, in particular, the site where the red cinders of the ironworks are found, was not originally named as such.