| Family |
Isabel Marshall, [COUNTESS OF COR, c. Apr 1206, , St. David's, Pembrokeshire, Wales d. 16 Jan 1240, , Berkhamstead, Hertfordshire, England (Age ~ 33 years) |
| Children |
| | 1. Gilbert De Clare, b. 12 Sep 1229, , , Gloucestershire, England d. Aft 1241 (Age > 13 years) |
| | 2. Joan De Clare, b. Abt 1210, Of, Pembroke, Pembroke, Wales  |
| | 3. Richard De Clare, [Earl of Glouces, b. 4 Aug 1222, , , Gloucestershire, England d. 15 Jul 1262, Ashenfield Manor, Waltham, Kent, England (Age 39 years) |
| | 4. William De Clare, [Sir Knight], b. 18 May 1228, , , Gloucestershire, England bur. 23 Jul 1258, Dureford Abbey (Age ~ 30 years) |
| | 5. Amica De Clare, [COUNTESS OF DEV, b. 27 May 1220, , Usk, Mommouthshire, Wales d. 30 Nov 1284/1287 (Age 67 years) |
| | 6. Maud De Clare, b. Abt 1210, Of, Pembroke, Pembroke, Wales  |
| | 7. Isabel De Clare, b. 8 Nov 1226, Of, , Gloucestershire, England d. Aft 10 Jul 1264 (Age > 38 years) |
| | 8. Adeliza De Clare, b. 1228, , , Gloucestershire, England  |
| | 9. Susan De Clare, b. 1217, Of, Kilkenny, , Ireland  |
| | 10. Agnes De Clare, b. 1229, , , Gloucestershire, England  |
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