| Gilbert III (Magna Charta Baron) De Clare (maid. name 1) | |
| B: | 1180 |
| Hertford, Herts, England | |
| D: | 25 Oct 1230 |
| Penros, Brittany, France | |
| Isabel countess Cor marshall |
| Isabel countess Cor marshall | |
| B: | 9 Oct 1200 |
| Pembroke, Pembrokeshire, Wales | |
| M: | 9 Oct 1217 |
| Penros, Brittany | |
| D: | 17 Jan 1239 |
| Birkhampstead, Hertfordshire, England | |
| Susan DeClare |
| Susan DeClare | |
| B: | 1217 |
| Agnes Rose deClare |
| Agnes Rose deClare | |
| B: | 1218 |
| D: | 1226 |
| England | |
| Amice deClare |
| Amice deClare | |
| B: | 27 May 1220 |
| Usk, Monmouthshire, Wales | |
| D: | 21 Jan 1283 |
| Plumpton, Yorkshire, England | |
| Isabel deClare |
| Isabel deClare | |
| B: | May 1240 |
| Tonbridge, Kent, England | |
| D: | 1271 |
| Tunbridge, Kent, England | |
| Eleanor DeClare |
| Eleanor DeClare | |
| B: | 1292 |
| Caerphilly, Glamorganshire, Wales | |
| D: | 1337 |
| Tewkesbury, Gloucesetershire, England | |
| Hugh (1st lord despencer) De spencer (maid. name Younger) | |
| B: | 1286 |
| Winchester, Hampshire, England | |
| M: | 1306 |
| London, Middlesex, England | |
| D: | 1326 |
| Captured at Bristol with his father, he was Hung drawn and quatered for high treason Hereford, Herefordshire, England | |
| Gilbert (6th Earl of Hertford and 7th Earl of Glouceter) DeClare | |
| B: | 2 Sep 1243 |
| Christchurch, Hampshire, England | |
| D: | 7 Dec 1295 |
| Monmouth Castle, Monmouthshire, England | |
| Joan of Acre |
| Joan of Acre | |
| B: | 1272 |
| Acre, Hazafon, Palestine | |
| M: | 30 Apr 1290 |
| Westminster Abbey, London, Middlesex. | |
| D: | 23 Apr 1307 |
| Clare, Suffolk, England | |
| Isabella DeClare |
| Isabella DeClare | |
| B: | 1262 |
| D: | 1333 |
| Maurice (2nd Baron Berkeley) Berkeley |
| Maurice (2nd Baron Berkeley) Berkeley | |
| B: | 27 May 1349 |
| Berkeley Castle, Gloucestershire, England | |
| D: | 3 Jun 1368 |
| Berkeley, Gloucestershire, England | |
| Joan DeClare |
| Joan DeClare | |
| B: | 1264 |
| D: | 1302 |
| Duncan (7th Earl of Fife) mac duff |
| Duncan (7th Earl of Fife) mac duff | |
| B: | 1263 |
| D: | 1288 |
| Alice de Lusignan |
| Alice de Lusignan | |
| B: | 1243 |
| Lusignan, Vienne, Poitou-Charentes, France | |
| D: | 1295 |
| Warren, Sussex, England | |
| Maud De Clare |
| Maud De Clare | |
| B: | 1279 |
| Connaught, Clare, Ireland | |
| D: | 1 Feb 1324 |
| Clifford, Herefordshire, England | |
| Thomas DeClare |
| Thomas DeClare | |
| B: | 1248 |
| Tunbridge, Kent, England | |
| D: | 29 Aug 1287 |
| Connaught, Clare, Ireland | |
| Juliana FitzMaurice |
| Juliana FitzMaurice | |
| B: | 1259 |
| Dublin, Dublin, Ireland | |
| M: | 1275 |
| Essex, England | |
| D: | 24 Sep 1300 |
| Connaught, Clare, Ireland | |
| Robert Richard De Clare |
| Robert Richard De Clare | |
| B: | 1249 |
| Tonbridge, Kent, England | |
| D: | Jul 1262 |
| Tunbridge, Kent, England | |
| Roese de Clare |
| Roese de Clare | |
| B: | 17 Oct 1252 |
| Tonbridge, Kent, England | |
| D: | 1316 |
| Tunbridge, Kent, England | |
| Benedict de Clare |
| Benedict de Clare | |
| B: | 1254 |
| Tonbridge, kent England | |
| D: | 1295 |
| Eglentine De Clare |
| Eglentine De Clare | |
| B: | 1257 |
| Tonbridge, Kent, England | |
| D: | 1257 |
| Age, Cuanza Sul, Angola | |
| Richard IV (5th Earl of Hertford)( 6th Earl of Glos) De Clare (maid. name 1) | |
| B: | 4 Aug 1222 |
| Mellent, Gloucestershire, England | |
| D: | 15 Jul 1262 |
| Ashenfield-in-Waltham, Kent, Eng, England | |
| Maud de Lacy |
| Maud de Lacy | |
| B: | 1223 |
| Lincoln, Lincolnshire, England | |
| M: | 25 Jan 1238 |
| Lincolnshire, England | |
| D: | 10 Mar 1289 |
| Lincoln, Lincolnshire, England | |
| Agnes deCLARE |
| Agnes deCLARE | |
| B: | 1224 |
| Gloucestershire, England | |
| D: | 26 Dec 1261 |
| Isabel DeClare |
| Isabel DeClare | |
| B: | 2 Nov 1226 |
| Tewkesbury, Gloucestershire, England | |
| D: | 10 Jul 1264 |
| Cleveland, Yorkshire, England | |
| Unknown |