Monday, January 26, 2026
Thompson Branch

4th Countess of Pembroke and Striguil Isabel De Clare

Female 1172 - 1220  (48 years)


Generations:      Standard    |    Compact    |    Text    |    Register    |    PDF

More detail
Generation: 1

  1. 1.  4th Countess of Pembroke and Striguil Isabel De Clare was born 1172, Ireland; died 1220; was buried , Monmouthshire, Wales.

    Isabel — William Marshal. William (son of John Marshal and Sibyl of Salisbury) was born 1146; died 14 May 1219; was buried , London, England. [Group Sheet]

    Children:
    1. 2. Eva Marshal  Descendancy chart to this point was born 1203, Pembrokeshire, Wales; died 1246.
    2. 3. William Marshal  Descendancy chart to this point was born 1190; died 6 Apr 1231.
    3. 4. Richard Marshal  Descendancy chart to this point was born 1191; died 16 Apr 1234.
    4. 5. Mehelt Marshal  Descendancy chart to this point was born 1194; died 27 Mar 1248.
    5. 6. Gilbert Marshal  Descendancy chart to this point was born 1197; died 27 Jun 1241.
    6. 7. Walter Marshal  Descendancy chart to this point was born 1199; died Nov 1245.
    7. 8. Isabel Marshal  Descendancy chart to this point was born 9 Oct 1200; died 17 Jan 1240.
    8. 9. Sibyl Marshal  Descendancy chart to this point was born 1201; died 27 Apr 1245.
    9. 10. Anselm Marshal  Descendancy chart to this point was born 1198; died 22 Dec 1245.
    10. 11. Joan Marshal  Descendancy chart to this point was born 1202; died 1234.


Generation: 2

  1. 2.  Eva Marshal Descendancy chart to this point (1.Isabel1) was born 1203, Pembrokeshire, Wales; died 1246.

    Eva married William De Braose Bef 1221. William (son of Reginald De Braose and Grecia De Briwere) was born Abt 1197, Brecon, Breconshire, Wales; died 2 May 1230. [Group Sheet]

    Children:
    1. 12. Maud De Braose  Descendancy chart to this point was born 1224; died 1301.
    2. 13. Isabella De Braose  Descendancy chart to this point was born 1222.
    3. 14. Eve De Braose  Descendancy chart to this point was born 1227; died 28 Jul 1255.
    4. 15. Eleanor De Braose  Descendancy chart to this point was born 1228; died 1251.

  2. 3.  William Marshal Descendancy chart to this point (1.Isabel1) was born 1190; died 6 Apr 1231.

    William — Alice De Bethune. [Group Sheet]


  3. 4.  Richard Marshal Descendancy chart to this point (1.Isabel1) was born 1191; died 16 Apr 1234.

    Richard — Gervase Le Dinant. [Group Sheet]


  4. 5.  Mehelt Marshal Descendancy chart to this point (1.Isabel1) was born 1194; died 27 Mar 1248.

    Mehelt — Hugh Bigod. [Group Sheet]


  5. 6.  Gilbert Marshal Descendancy chart to this point (1.Isabel1) was born 1197; died 27 Jun 1241.

    Gilbert — Marjorie of Scotland. [Group Sheet]


  6. 7.  Walter Marshal Descendancy chart to this point (1.Isabel1) was born 1199; died Nov 1245.

    Walter — Margaret De Quincy. Margaret (daughter of Robert De Quincy and Hawise of Chester) was born 1206; died Mar 1266. [Group Sheet]


  7. 8.  Isabel Marshal Descendancy chart to this point (1.Isabel1) was born 9 Oct 1200; died 17 Jan 1240.

    Isabel — Gilbert De Clare. Gilbert (son of Richard De Clare and Amice Fitzrobert) was born 1180, Hertford, Hertfordshire, England; died 25 Oct 1230, Penrose, Brittany, France. [Group Sheet]

    Children:
    1. 16. Richard De Clare  Descendancy chart to this point was born 4 Aug 1222; died 14 Jul 1262, Canterbury, Kent, England.
    2. 17. Agnes De Clare  Descendancy chart to this point was born 1218.
    3. 18. Amice De Clare  Descendancy chart to this point was born 1220; died 1287.
    4. 19. William De Clare  Descendancy chart to this point was born 1228; died 1258.
    5. 20. Gilbert De Clare  Descendancy chart to this point was born 1229.
    6. 21. Isabella De Clare  Descendancy chart to this point was born 2 Nov 1226; died Aft 10 Jul 1264.

  8. 9.  Sibyl Marshal Descendancy chart to this point (1.Isabel1) was born 1201; died 27 Apr 1245.

    Sibyl — William De Ferrers. William was born 1193, Derbyshire, England; died 28 Mar 1254. [Group Sheet]

    Children:
    1. 22. Agnes De Ferrers  Descendancy chart to this point died 11 May 1290.
    2. 23. Isabel De Ferrers  Descendancy chart to this point died Bef 26 Nov 1260.
    3. 24. Maud De Ferrers  Descendancy chart to this point died 12 Mar 1298.
    4. 25. Sibyl De Ferrers  Descendancy chart to this point
    5. 26. Joan De Ferrers  Descendancy chart to this point died 1267.
    6. 27. Agatha De Ferrers  Descendancy chart to this point died May 1306.
    7. 28. Eleanor De Ferrers  Descendancy chart to this point died 16 Oct 1274.

  9. 10.  Anselm Marshal Descendancy chart to this point (1.Isabel1) was born 1198; died 22 Dec 1245.

    Anselm — Maud De Bohun. [Group Sheet]


  10. 11.  Joan Marshal Descendancy chart to this point (1.Isabel1) was born 1202; died 1234.

    Joan — Warin De Munchensi. [Group Sheet]



Generation: 3

  1. 12.  Maud De Braose Descendancy chart to this point (2.Eva2, 1.Isabel1) was born 1224; died 1301.

    Maud married Roger De Mortimer 1247. Roger (son of Ralph De Mortimer and Gwladus Ferch Llywelyn) was born 1231; died 30 Oct 1282; was buried Wigmore Abbey. [Group Sheet]

    Children:
    1. 29. Edmund De Mortimer  Descendancy chart to this point was born 1251; died 17 Jul 1304.
    2. 30. Ralph Mortimer  Descendancy chart to this point died 1276.
    3. 31. Isabella Mortimer  Descendancy chart to this point died 1292.
    4. 32. Margaret Mortimer  Descendancy chart to this point died 1297.
    5. 33. Roger Mortimer  Descendancy chart to this point died 1326.
    6. 34. Geoffrey Mortimer  Descendancy chart to this point
    7. 35. William Mortimer  Descendancy chart to this point

  2. 13.  Isabella De Braose Descendancy chart to this point (2.Eva2, 1.Isabel1) was born 1222.

  3. 14.  Eve De Braose Descendancy chart to this point (2.Eva2, 1.Isabel1) was born 1227; died 28 Jul 1255.

    Eve — William De Cantelou. [Group Sheet]


  4. 15.  Eleanor De Braose Descendancy chart to this point (2.Eva2, 1.Isabel1) was born 1228; died 1251.

    Eleanor — Humphrey De Bohun. [Group Sheet]

    Children:
    1. 36. Humphery De Bohun  Descendancy chart to this point
    2. 37. Gilbert De Bohun  Descendancy chart to this point
    3. 38. Alianore De Bohun  Descendancy chart to this point

  5. 16.  Richard De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 4 Aug 1222; died 14 Jul 1262, Canterbury, Kent, England.

    Richard married Maud De Lacy 25 Jan 1238. Maud (daughter of John De Lacy and Margaret De Quincy) was born 25 Jan 1223, Lincoln, Lincolnshire, England; died 10 Mar 1289. [Group Sheet]

    Children:
    1. 39. Gilbert De Clare  Descendancy chart to this point was born 2 Sep 1243, Christchurch, Hampshire, England; died 7 Dec 1295, Monmouth, Monmouthshire, Wales; was buried , Gloucestershire, England.
    2. 40. Isabel De Clare  Descendancy chart to this point was born Abt 1240; died 1270.
    3. 41. Thomas De Clare  Descendancy chart to this point was born Abt 1245; died 1287.
    4. 42. Bogo De Clare  Descendancy chart to this point was born Abt 1248; died 1294.
    5. 43. Margaret De Clare  Descendancy chart to this point was born Abt 1250; died 1312.
    6. 44. Rohese De Clare  Descendancy chart to this point was born Abt 1252.
    7. 45. Eglentina De Clare  Descendancy chart to this point died 1257.

  6. 17.  Agnes De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 1218.

  7. 18.  Amice De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 1220; died 1287.

  8. 19.  William De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 1228; died 1258.

  9. 20.  Gilbert De ClareGilbert De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 1229.

  10. 21.  Isabella De Clare Descendancy chart to this point (8.Isabel2, 1.Isabel1) was born 2 Nov 1226; died Aft 10 Jul 1264.

    Isabella married Robert De Brus, V 12 May 1240. Robert (son of Robert De Brus and Isabella of Huntingdon) died 31 Mar 1295, Lochmaben, Dumfries-shire, Scotland; was buried , Guisborough, Yorkshire, England. [Group Sheet]

    Children:
    1. 46. Robert De Brus, VI  Descendancy chart to this point was born Jul 1243, Writtle, Essex, England; died Bef 4 Mar 1304; was buried , Cumberland, England.
    2. 47. Isabel De Brus  Descendancy chart to this point was born 1249; died Abt 1284.
    3. 48. Constance De Brus  Descendancy chart to this point was born 1251.
    4. 49. William De Brus  Descendancy chart to this point
    5. 50. Bernard De Brus  Descendancy chart to this point
    6. 51. Richard De Brus  Descendancy chart to this point died Abt 26 Jan 1287.

  11. 22.  Agnes De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died 11 May 1290.

  12. 23.  Isabel De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died Bef 26 Nov 1260.

  13. 24.  Maud De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died 12 Mar 1298.

  14. 25.  Sibyl De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1)

  15. 26.  Joan De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died 1267.

  16. 27.  Agatha De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died May 1306.

  17. 28.  Eleanor De Ferrers Descendancy chart to this point (9.Sibyl2, 1.Isabel1) died 16 Oct 1274.


Generation: 4

  1. 29.  Edmund De Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1) was born 1251; died 17 Jul 1304.

    Edmund married Margaret De Fiennes Sep 1285. Margaret (daughter of William De Fiennes, II and Blanche De Brienne) was born Aft 1269; died 7 Feb 1333. [Group Sheet]

    Children:
    1. 52. Isolde De Mortimer  Descendancy chart to this point was born Abt 1271, Wigmore, Herefordshire, England; died 1328, Kidderminster, Worcestershire, England.
    2. 53. Roger Mortimer  Descendancy chart to this point was born 25 Apr 1287, Thornbury, Herefordshire, England; died 29 Nov 1330, Warwickshire, England.
    3. 54. Maude Mortimer  Descendancy chart to this point was born Abt 1286; died Bef 1316.
    4. 55. Edmund De Mortimer  Descendancy chart to this point

  2. 30.  Ralph Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1) died 1276.

  3. 31.  Isabella Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1) died 1292.

  4. 32.  Margaret Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1) died 1297.

  5. 33.  Roger Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1) died 1326.

  6. 34.  Geoffrey Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1)

  7. 35.  William Mortimer Descendancy chart to this point (12.Maud3, 2.Eva2, 1.Isabel1)

  8. 36.  Humphery De Bohun Descendancy chart to this point (15.Eleanor3, 2.Eva2, 1.Isabel1)

  9. 37.  Gilbert De Bohun Descendancy chart to this point (15.Eleanor3, 2.Eva2, 1.Isabel1)

  10. 38.  Alianore De Bohun Descendancy chart to this point (15.Eleanor3, 2.Eva2, 1.Isabel1)

  11. 39.  Gilbert De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born 2 Sep 1243, Christchurch, Hampshire, England; died 7 Dec 1295, Monmouth, Monmouthshire, Wales; was buried , Gloucestershire, England.

    Gilbert married Joan of Acre 30 Apr 1290. Joan (daughter of Edward Plantagenet and Eleanore of Castile) was born 1272; died 23 Apr 1307. [Group Sheet]

    Children:
    1. 56. Margaret De Clare  Descendancy chart to this point was born 12 Oct 1292, Caerphilly, Glamorgan, Wales; died 9 Apr 1342, Badlesmere, Kent, England.
    2. 57. Gilbert De Clare  Descendancy chart to this point was born 1291; died 1314.
    3. 58. Elizabeth De Clare  Descendancy chart to this point was born 1295; died 1360.
    4. 59. Eleanor De Clare  Descendancy chart to this point was born 1292; died 1337.

  12. 40.  Isabel De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born Abt 1240; died 1270.

  13. 41.  Thomas De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born Abt 1245; died 1287.

  14. 42.  Bogo De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born Abt 1248; died 1294.

  15. 43.  Margaret De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born Abt 1250; died 1312.

  16. 44.  Rohese De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) was born Abt 1252.

  17. 45.  Eglentina De Clare Descendancy chart to this point (16.Richard3, 8.Isabel2, 1.Isabel1) died 1257.

  18. 46.  Robert De Brus, VI Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1) was born Jul 1243, Writtle, Essex, England; died Bef 4 Mar 1304; was buried , Cumberland, England.

    Robert married Margaret of Carrick 1271. Margaret (daughter of Níall of Carrick) was born Abt 1253; died Bef 6 Nov 1292. [Group Sheet]

    Children:
    1. 60. Alexander De Brus  Descendancy chart to this point was born Abt 1285, Carrick, Ayrshire, Scotland; died 9 Feb 1307, Carlisle, Cumberland, England.
    2. 61. Edward De Bruce  Descendancy chart to this point was born Abt 1280; died 14 Oct 1318; was buried , Dundalk, Louth, Ireland.
    3. 62. Isabella Bruce  Descendancy chart to this point was born Abt 1272, Carrick, Ayrshire, Scotland; died 1358, Bergen, Noord-Holland, Netherlands.
    4. 63. Robert Bruce, I  Descendancy chart to this point was born 11 Jul 1274, Kirkoswald, Ayrshire, Scotland; died 7 Jun 1329, Cardross, Dunbartonshire, Scotland; was buried , Dunfermline, Fife, Scotland.
    5. 64. Christina Bruce  Descendancy chart to this point was born Abt 1273, Seton, East Lothian, Scotland; died Abt 1356.
    6. 65. Mary Bruce  Descendancy chart to this point was born Abt 1282; died 22 Sep 1323.
    7. 66. Elizabeth Bruce  Descendancy chart to this point was born Bef 1292.
    8. 67. Matilda Bruce  Descendancy chart to this point was born Bef 1292; died Abt 1325.
    9. 68. Nigel De Brus  Descendancy chart to this point was born Abt 1279, Carrick, Ayrshire, Scotland; died Sep 1306, Berwick-upon-Tweed, Northumberland, England.
    10. 69. Thomas De Brus  Descendancy chart to this point was born Abt 1284, Carrick, Ayrshire, Scotland; died 9 Feb 1307, Carlisle, Cumberland, England.

  19. 47.  Isabel De Brus Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1) was born 1249; died Abt 1284.

    Isabel — John Fitzmarmaduke. [Group Sheet]


  20. 48.  Constance De Brus Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1) was born 1251.

    Constance — William Scot De Calverley. [Group Sheet]


  21. 49.  William De Brus Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1)

    William — Elizabeth De Sully. [Group Sheet]


  22. 50.  Bernard De Brus Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1)

    Bernard — Alicia De Clare. [Group Sheet]

    Bernard — Constance De Morleyn. [Group Sheet]


  23. 51.  Richard De Brus Descendancy chart to this point (21.Isabella3, 8.Isabel2, 1.Isabel1) died Abt 26 Jan 1287.