- b.Bet 1170 and 1177 in Hamlake Castle, Yorkshire, England d.<23 Dec 1226 in Helmsley, Holderness, Yorkshire, England
- b.Bet 1192 and 1203 in Helmsley, Yorkshire, England d.Bet 1258 and 1264
- b.~ 1170 in Haddington, East Lothian, Scotland d.Oct 1263
- b.< 1237 in Hamlake Castle, Yorkshire, England d.17 May 1285
- b.1165 in Blewleveny Castle, Brecknock, Wales or Forest of Dean, Gloucestershire, England d.01 Jun 1235 in Reading, Berkshire, England
- b.~ 1196 in Helmsley, Yorkshire, England d.> 1266
- b.~ 1187 in Warkworth, Northumberland or Clavering, Essex, England
- b.~ 1255 d.1316
- b.Bet 1154 and 1165 in Belvoir Castle, Leicestershire, England d.~30 Mar 1221 in Cainell near Rome, Latium, Italy
- b.< 1220 d.> 1244
- b.~ 1172
- b.~ 1244 in Belvoir Castle, Leicestershire, England d.15 Jun 1301
- b.< 1220 d.> 1233
- b.~ 1233 d.> 1285
- b.1290 in Helmsley, Holderness, Yorkshire, England d.3 Feb 1342/43
- b.< 1215 d.> 1216
- b.< 1230
- b.1176 in Freiston, Lincolnshire, England d. in Far East
- b.< 1215
- b.1176 in Chapham, Bedfordshire, England d.1224
- b.Bet 1230 and 1255 d.16 Aug 1316
- b.~ 1326 in Yorkshire, England d.>16 May 1380 in Northamptonshire, England
- b.~ 1181 in Castle Tong, Kent, England d.Bet 1205 and 1256
- b.~ 1203 d.Bet 1248 and 1258
- b.< 1190 d.> 1209
- b.Bet 1232 and 1244 in Chilham, Kent, England d.Bet 1284 and 1285 in Castle Badlesmere, Kent, England
- b.< 1230
- b.Bet 1274 and 1275 in Chilham, Kent, England d.14 Apr 1322 in Canterbury, Kent, England
- b.< 1190 d.> 1205
- b.~ 1205 d.~ 1239 in Kingsdowne, Kent, England
- b.~ 1234 in Kingsdowne, Kent, England d.1310
- b.< 1220 d.> 1234
- b.1306 in Castle Badlesmere, Kent, England d.18 Oct 1363 in Helmsley, Yorkshire, England
- b.1182 in Hertford, Hertfordshire, England d.25 Oct 1230 in Penrose, Brittany, France
- b.04 Aug 1222 in Gloucestershire, England d.15 Jul 1262 in Ashenfield Manor, Eschemerfield, Waltham, Kent, England
- b.09 Oct 1200 in Pembroke Castle, Pembrokeshire, Wales d.17 Jan 1239/40 in Berkhamsted Castle, Berkhampstead, Hertfordshire, England
- b.~ 1245 in Thomond, Ireland d.29 Aug 1287 in Clare, Ireland
- b.~ 1192 in Lincoln, Lincolnshire, England d.22 Jul 1240 in Stanlaw, Chester, England
- b.~ 1223 in Lincoln, England d.Bef 10 Mar 1288/89
- b.1208 d.<30 Mar 1266
- b.Bet 1280 and 1286 in Thomond, Connaught, County Calre, Ireland d.1333 in Castle Badlesmere, Kent, England
- b.~ 1190 d.1257 in Youghal Monastery
- b.> 1220 d.1286
- b.1195 in England d.1257
- b.> 1265 d.Bet 1300 and 1309
- b.~ 1216 in Salisbury, Wiltshire, England d.1260 in Sutton, Northamptonshire, England
- b.Bet 1250 and 1252 d.1291
- b.Bet 1220 and 1223 in Ulster, Ireland d.~ 1276 in Salisbury, Wiltshire, England