dinefwr park has a history of occupation spanning at least two millennia. a polished stone axe dated to the neolithic period was unearthed on the site in 1976, and during the iron age, a farm existed on the property. the romans later built a pair of forts here, with one partly overlying the other. there are traces of roman roads and tracks, some of which may have been part of the carmarthen–llandovery roman road. a roman milestone and a coin hoard were unearthed near dinefwr castle, and pieces of amphorae and samian items have been excavated near dinefwr farm.