found: Work cat: Remfry, P. Castell Bwlch y Dinas and the families of Neufmarché, Hereford, Braose, Fitz Herbert, Mortimer and Talbot, 2014.
found: Ordnance Survey open data viewer WWW site, viewed 3 November 2014:open street view layer, 1:10,000 scale (Castell Dinas, Powys (Antiquity))
found: UK grid reference finder WWW site, viewed 3 November 2014(Castell Dinas, Wales ; grid reference: SN00448 38147; latitude: 52.005798; longitude: -4.9087801)
found: Wikipedia WWW site, viewed 3 November 2014(Castell Dinas is a hillfort and castle in southern Powys, Wales)