Castle,Grid Ref,Original type,Date,Topography,Height,Top m²,Base m²,Gradient,Bailey,Builder,Theory Abergavenny,SO 3299 2139,motte/masonry,1081 D,Natural defence,tall,nd,nd,steep,1,,Early Bach Motte,SO 3298 2434,motte W,nd,Natural defence,6.23,27.49,401.738,47.48,?,?,Early Bacton,SO 3371 2336,motte W,nd,Natural defence,1.62,82.53,268.55,49.25,1,?,Late Bredwardine 1,SO 3337 2440,possible motte,1374 D,Natural defence,tall,nd,nd,steep,1,?,Early Bryngwyn,SO 3394 2088,motte,1855 D,Open,3.75,89.597,551.06,49.36,?,?,Mid Caerleon,ST 3342 1905,motte/masonry,1086 D,Open,16.19,412.235,3235.225,77.5,?,?,Early Caerwent 1,ST 3470 1903,motte W,nd,Open,nd,nd,nd,nd,1,?,Early Castle Farm,SO 3406 2384,possible motte,nd,Open,nd,nd,nd,nd,1,?,Late Chanstone Tump 1,SO 3366 2359,possible motte,nd,Open,2.6,574.189,1551.497,43.86,?,?,Late Clifford,SO 3243 2456,motte/masonry,1067/71 D,Natural defence,tall,nd,nd,steep,1,William fitz Osbern,Early Colstar Motte,ST 3319 1926,motte,nd,Natural defence,5.89,190.08,738.43,65.16,1,?,Mid Cothill Farm,SO 3338 2362,motte W,nd,Natural defence,3.56,261.537,655.857,60.04,?,?,Late Crucorney,SO 3330 2217,motte,nd,Natural defence,7.88,35.951,801.953,62,1,?,Early Didley,SO 3450 2320,motte,nd,Natural defence,5.79,53.142,475.691,48.84,1,?,Mid Dingestow 1,SO 3460 2104,motte,nd,Natural defence,8.17,122.313,759.525,76.45,1,?,Early Dingestow 2,SO 3460 2104,motte/masonry,1182 D ,Natural defence,2.69,1752.164,4667.031,62.06,1,Ranulf Poer,Late Dorstone,SO 3312 2417,motte,nd,Open,6.79,727.411,2704.195,72.01,2,?,Mid Ewyas Harold,SO 3385 2287,motte,1052 D,Natural defence,16.36,384.839,3815.745,70.33,1,William fitz Osbern,Early Great Goytre,SO 3353 2232,motte W,nd,Natural defence,4.78,56.15,268.66,64.05,1,?,Mid Kilpeck,SO 3444 2305,motte/masonry,L11th E 12th P,Open,high,nd,nd,steep,3,?,mid King's Caple,SO 3559 2288,motte,nd,Open,4.59,439.248,1224.951,43.06,1,?,Late Langstone,ST 3371 1895,motte,1189 D,Natural defence,medium,nd,nd,steep,1,?,Mid Llanarth,SO 3363 2096,motte,E 13th P,Open,5.62,237.379,1589.705,47.92,1,?,Mid Llancillo,SO 3367 2255,motte,nd,Open,6.22,289.906,1117.238,68.29,1,?,Early Llanfair Kilgeddin,SO 3350 2069,motte,nd,Open,3.02,131.433,536.961,53.23,?,?,Late Llanfihangel Crucorney,SO 3330 2217,motte,nd,Natural defence,7.88,35.951,801.953,62,1,?,Early Llangovan,SO 3452 2070,motte,nd,Open,6.87,225.887,1095.035,74.02,?,?,Early Llangwm Isaf,SO 3424 2011,motte W,nd,Natural defence,2.93,926.409,1633.816,55.56,1,?,? Llangwm Uchaf,ST 3428 1998,motte W,nd,Natural defence,1.52,274.532,481.561,38.53,?,?,Early Mount Ballan,ST 3487 1895,motte,nd,Open,4.16,67.688,616.866,47.37,1,?,Early Mouse Castle 1,SO 3248 2426,motte W,nd,Natural defence,4.5,65.421,830.706,93.1,1,?,Early Mynydd-brīth,SO 3281 2415,motte W,nd,Natural defence,5.27,213.653,712.482,81.18,1,?,Early Nant-y-bar,SO 3278 2410,motte W,nd,Natural defence,3.79,431.494,985.427,50.38,?,?,? Newcastle,SO 3448 2172,motte,nd,Natural defence,6.21,31.03,498.02,57.77,2,?,Early Newport (Stow),ST 3304 1874,possible motte,nd,Natural defence,nd,nd,nd,nd,?,?,? Newton Tump,SO 3223 2441,motte,nd,Open,3.57,143.37,651.298,63.39,1,?,Mid Old Castleton,SO 3283 2457,ring-work/motte,1140-1180 P,Natural defence,8.74,164.495,1195.056,58.94,3,?,Early Orcop,SO 3473 2266,motte,nd,Open,6.59,270.4,1200.442,75.77,1,?,Early Penrhos,SO 3410 2132,motte,1248 D,Open,3.98,135.449,1168.611,41.79,,?,Late Pont Hendre,ST 3326 1281,motte,nd,Natural defence,10.39,121.303,1519.893,63.01,1,?,Early Rockfield,SO 3483 2145,motte,nd,Natural defence,4.19,156.74,364.472,55.7,1,?,Early Rowlestone,SO 3375 2272,motte W,nd,Natural defence,4.06,368.29,820.907,71.7,?,?,Early Snodhill,SO 3322 2403,motte/masonry,nd,Natural defence,tall,nd,nd,steep,1,?,Early St Illtyd,SO 3217 2020,motte W,nd,Natural defence,5.3,269.8,888.666,70.31,?,?,Early St Weonards,ST 3497 1243,motte,nd,Natural defence,6.15,531.984,965.948,81.28,?,?,Early Thruxton,SO 3436 2348,motte,nd,Open,4.88,244.087,840.946,69.83,,?,Mid Trelech,SO 3500 2054,motte,1175 -1200 P,Natural defence,5.76,142.762,758.373,71.74,1,?,Early Twmbarlwm,ST 3243 1927,motte W,nd,Natural defence,5.58,185.794,1614.864,56.44,1,?,Early Walterstone,SO 3339 2250,motte,nd,Natural defence,7.06,574.189,1551.497,62.99,?,?,Early