

| 1. | Alan de Percy, Earl of Caux was born about 1050 in Caux, Normandie, France; died before Dec 1135; was buried in Whitby, North Riding, Yorkshire, England. Alan married Emma de Gaunt about 1087 in Caux, Normandie, France. Emma was born about 1071 in Folkingham, Lincoln, England. [Group Sheet] [Family Chart]
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| 2. | Miss de Percy |
| 3. | Alan Gaufrid de Percy |
| 4. | Geffrey de Percy |
| 5. | Henry de Percy |
| 6. | Robert de Percy |
| 7. | Walter de Rugemond de Percy Walter married Avice Meschin about 1114 in Whitby, North Riding, Yorkshire, England. Avice was born about 1094 in Whitby, North Riding, Yorkshire, England; and died. [Group Sheet] [Family Chart] |
| 8. | William I de Percy, Earl of Caux William married Alice de Ros about 1111 in Caux, Normandie, France. Alice (daughter of Everard de Ros and Mrs. Everard de Ros) was born about 1090 in Alnwick, Northumberland, England; and died. [Group Sheet] [Family Chart]
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| 9. | Miss de Percy |
| 10. | Serlo de Percy |
| 11. | Alan de Percy |
| 12. | Richard de Percy Richard married Jane de Bruers about 1149 in Alnwick, Northumberland, England. Jane was born about 1125; and died. [Group Sheet] [Family Chart] |
| 13. | Robert de Percy |
| 14. | Sir. William de Percy, Baron William married Adeliza de Clare in 1136 in Alnwick, Northumberland, England. Adeliza (daughter of Richard I de Clare and Alice de Meschines) was born about 1115 in Royal Tunbridge Wells, Kent, England; and died. [Group Sheet] [Family Chart]
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| 15. | Richard de Percy |
| 16. | Walter de Percy |
| 17. | Alan de Percy Alan married Mrs. Alan de Percy about 1165 in of Sallay, West Riding, Yorkshire, England. Alan was born about 1145 in of Sallay, West Riding, Yorkshire, England; and died. [Group Sheet] [Family Chart] |
| 18. | Maud de Percy Maud married William Beaumont, Earl of Warwick about 1166 in of Sallay, West Riding, Yorkshire, England. William was born about 1139 in of, , Warwickshire, England; died on 15 Nov 1184. [Group Sheet] [Family Chart] |
| 19. | William Percy, III |
| 20. | Agnes de Percy Agnes married Joscelin de Lorraine, I in 1154 in Egmanton, Nottinghamshire, England. Joscelin (son of Duke Duke Godfrey de Lorraine and Clementia de Lombardy) was born about 1113 in Brabant, Antwerp, Belgium, Netherlands; was christened in of Louvain, Brabant, Belgium, Netherlands; died in 1178 in Egmanton, Nottinghamshire, England. [Group Sheet] [Family Chart]
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| 21. | Sheriff of Northumberland Henry de Percy, I Sheriff married Isabel de Brus in 1196 in Cleveland, Ormesby, North Riding, Yorkshire, Egland. Isabel was born about 1169 in Cleveland, North Riding, Yorkshire, England; died after 1230. [Group Sheet] [Family Chart]
Sheriff married about 1215. [Group Sheet] [Family Chart] |
| 22. | Joscelaine II de Percy |
| 23. | Robert de Percy |
| 24. | Eleonor de Percy |
| 25. | Richard de Percy Richard married Joan de Braose about 1202 in Alnwick, Northumberland, England. Joan was born about 1175 in of, Bramber Castle, Sussex, England; and died. [Group Sheet] [Family Chart] |
| 26. | Alice de Percy |
| 27. | Maud de Percy Maud married John de Daiville about 1195 in Egmanton, Nottinghamshire, England. John was born about 1171 in Egmanton, Nottinghamshire, England; died before 1242 in Egmanton, Nottinghamshire, England. [Group Sheet] [Family Chart] |
| 28. | Sir. Baron Sir William de Percy Baron married Joan de Briwere about 1215 in of, Warwick, Warwickshire, England. Joan was born about 1193 in Stoke, Devon, England; and died. [Group Sheet] [Family Chart]
Baron married Eleanor de Balliol in 1226 in Dalton Piercy, Hart, Durham, England. Eleanor (daughter of Sir. Ingelram de Baliol, Baron and Agnes de Berkeley) was born about 1200 in Alnwick, Northumberland, England; died before 22 Nov 1281. [Group Sheet] [Family Chart]
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| 29. | Henry II de Percy Henry married Mrs. Isabel de Percy about 1215 in Alnwick Castle, Alnwick, Northumberland, England. Isabel was born about 1199 in Alnwick Castle, Alnwick, Northumberland, England; and died. [Group Sheet] [Family Chart] |
| 30. | Agnes de Percy |
| 31. | Alice de Percy |
| 32. | Joane de Percy |
| 33. | Anastasia Percy |
| 34. | Ada de Percy |
| 35. | William de Percy |
| 36. | Josceline de Percy |
| 37. | Geffrey de Percy |
| 38. | Richard de Percy |
| 39. | Alan de Percy |
| 40. | Earl Henry de Percy, I Earl married Eleanor de Warenne on 8 Sep 1268 in York, East Riding, Yorkshire, England. Eleanor (daughter of John de Warenne, Earl of Warren and Alice de Lusignan, Countess of Surrey) was born in 1257 in Sussex, England; died in 1282. [Group Sheet] [Family Chart]
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| 41. | Ingelram de Percy Ingelram married Aveline de Fortibus about 1266 in of Levington, West Riding, Yorkshire, England. Aveline was born between 20 Jan 1258 and 1259 in Burstwick, East Riding, Yorkshire, England; died on 10 Nov 1274 in Stockwell, Surrey, England. [Group Sheet] [Family Chart] |
| 42. | Josceline de Percy |
| 43. | Ingelram de Percy |
| 44. | Walter de Percy Walter married Christina Lindsay, Viscountess of Lamberton about 1249 in of Ormsby, North Riding, Yorkshire, England. Christina was born about 1233 in Lamberton, Mordington, Berwick, Scotland; and died. [Group Sheet] [Family Chart] |
| 45. | John de Percy |
| 46. | George Percy, Royal Yeoman George married Margaret de Chaldefield about 1300 in Great Chalfield, Wiltshire, England. Margaret was born about 1274 in Great Chalfield, Wiltshire, England; died after 1348. [Group Sheet] [Family Chart] |
| 47. | William de Percy |
| 48. | Earl Earl Henry de Percy, II Earl married Countess of Percy Eleanor FitzAlan about 1299 in Alnwick, Northumberland, England. Countess (daughter of John FitzAlan, Earl of Arundel III and Isabella de Mortimer, Countess of Arundel) was born about 1272 in Arundel, Sussez, England; died in Jul 1328. [Group Sheet] [Family Chart]
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| 49. | Earl Henry de Percy, III Earl married Countess of Percy Ideona de Clifford in 1314 in Yorshire, England. Countess was born in 1303 in Castle, Clifford, Hereford, England; died on 24 Aug 1365; was buried in Beverley Minster, East Riding, Yorkshire, England. [Group Sheet] [Family Chart]
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| 50. | Earl Henry III de Percy Henry married Countess of Percy Ideona de Clifford in 1314 in Yorkshire, England. Countess was born in 1303 in Castle, Clifford, Hereford, England; died on 24 Aug 1365; was buried in Beverley Minster, East Riding, Yorkshire, England. [Group Sheet] [Family Chart]
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| 51. | Baroness of Percy Mary Plantagenet Baroness married 12 Baron Sir Henry de Percy, IV in 1344 in Tutbury, Staffordshire, England. 12 was born in 1322 in Castle, Alnwick, Northumberland, England; died on 13 May 1368 in Berwick Castle, Berwick, Wiltshire, England. [Group Sheet] [Family Chart]
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| 52. | Roger Percy |
| 53. | Eleanor Percy Eleanor married John Fitzwalter about 1342 in of, , Cumberland, England. John was born about 1318 in Cumberland, England; and died. [Group Sheet] [Family Chart] |
| 54. | Thomas de Percy, Bishop |
| 55. | Isabel de Percy |
| 56. | Margaret de Percy, Baroness of Grooby Margaret married Sir. William de Ferrers, Baron before 25 May 1368 in of Grooby, Ratby, Leicester, England. William was born between 28 Feb 1332 and 1333 in of Grooby, Ratby, Leicester, England; was christened between 28 Feb 1332 and 1333 in Newbold Verdon, Leicestershire, England; died between 8 Jan 1370 and 1371 in Stebbing, Essex, England. [Group Sheet] [Family Chart] |
| 57. | William Percy |
| 58. | Sir. Henry IV de Percy, Baron Henry married Joan de Oreby, Baroness of Astley before May 1365 in Castle, Alnwick, Northumberland, England. Joan was born between Apr 1349 and 1350 in Lincolnshire, England; died on 29 Jul 1369 in Castle, Alnwick, Northumberland, England. [Group Sheet] [Family Chart] Henry married Mary Plantagenet, Baroness of Percy in 1344 in Tutbury, Staffordshire, England. Mary (daughter of Henry Plantagenet, Earl of Lancaster I and Maud de Chaworth) was born in 1319 in Tutbury, Staffordshire, England; died on 1 Sep 1362; was buried in Alnwick, Northumberland, England. [Group Sheet] [Family Chart]
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| 59. | Maud de Percy Maud married Sir. John de Neville, Baron in Jul 1357 in Alnwick, Northumberland, England. John (son of Sir. Ralph I de Neville, Baron and Alice de Audley, Baroness of Raby-Keverstone) was born in 1328 in Raby-Keverstone Castle, Staindrop, Durham, England; died on 17 Oct 1388 in Newcastle Upon Tyne, Northumberland, England; was buried in Durham, England. [Group Sheet] [Family Chart] |
| 60. | 13 Marshall of England Henry de Percy, V 13 married Baroness of Ros Margaret de Neville on 12 Jul 1358 in Brancepeth, Durham, England. Baroness (daughter of Sir. Ralph I de Neville, Baron and Alice de Audley, Baroness of Raby-Keverstone) was born about 1332 in Raby-Keverstone Castle, Staindrop, Durham, England; died on 12 May 1372. [Group Sheet] [Family Chart]
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| 61. | Isabella Percy Isabella married Sir. William I de Aton, Baron about 1362 in Berwick Castle, Berwick, Wiltshire, England. William was born about 1341 in of Malton, North Riding, Yorkshire, England; died between Mar 1388 and 1389. [Group Sheet] [Family Chart] |
| 62. | Sir. Thomas de Percy, Baron |
| 63. | Ralph de Percy, Earl of Northumberland Ralph married Philippa (Johanna) de Strathbogie between 20 Mar 1376 and 1377 in of, Strathbogie, Aberdeen, Scotland. Philippa was born between 1361 and 1362 in Perthshire, Scotland; died on 2 Nov 1395. [Group Sheet] [Family Chart] |
| 64. | Alan Percy |
| 65. | Margaret de Percy Margaret married Sir. Alan de Fenwick, Knight about 1400 in Alnwick Castle, Alnwick, Northumberland, England. Alan was born about 1365 in of Fenwick, Wallington, Northumberland, England; and died. [Group Sheet] [Family Chart] |
| 66. | Thomas de Percy Thomas married Elizabeth Strathbogie before 1386 in Shrewsbury, Shropshire, England. Elizabeth was born about 1354 in of, Atholl, Perth, Scotland; died after 1416. [Group Sheet] [Family Chart] |
| 67. | Earl 14 Earl Henry de Percy, VI 14 married Countess of Percy Elizabeth de Mortimer before 10 Dec 1379 in Usk, Monmouthshire, Wales. Countess (daughter of Edmund "the Good" de Mortimer, Earl of March and Philippa Plantagenet, Countess of March) was born on 12 Feb 1370 in Usk, Monmouthshire, Wales; died on 20 Apr 1417 in England. [Group Sheet] [Family Chart]
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