1st Baron Percy of Alnwick Henry de Percy
1273 - 1314 (41 years)(
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- 1 1st Baron Percy of Alnwick Henry de Percy [1] b. 25 Mar 1273 d. 10 Oct 1314
- Eleanor FitzAlan b. Abt 1284 d. Aug 1328
- 2 Henry Percy, II [1.1] b. 6 Feb 1300 d. 26 Feb 1352
- Baroness Idionia De Clifford b. 28 Aug 1301 d. 24 Aug 1365
- 3 3rd Baron Percy Henry de Percy [1.1.1] b. 1319 d. 18 May 1368
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- 4 1st Earl of Northumberland Henry Percy [1.1.1.1] b. 10 Nov 1341 d. 20 Feb 1408
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- 4 1st Earl of Northumberland Henry Percy [1.1.1.1]
- 3 Alianore de Percy [1.1.2] b. 1326 d. 18 Oct 1361
- 2nd Baron Fitzwalter John FitzWalter b. 1324 d. 18 Oct 1361
- 4 Lady Alice FitzWalter [1.1.2.1] b. Abt 1345 d. 29 Apr 1401
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- 4 Lady Alice FitzWalter [1.1.2.1]
- 3 Maud de Percy [1.1.3] b. 17 Oct 1335 d. Bef 18 Feb 1379
- 3rd Baron Neville de Raby John Neville b. 1329 d. 17 Oct 1388
- 4 Elizabeth Neville [1.1.3.1] b. 1357 d. 11 Aug 1412
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- 4 Eleanor Neville [1.1.3.2] b. 1360 d. 16 Jul 1447
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- 4 1st Earl of Westmorland Ralph Neville [1.1.3.3] b. 1364 d. 21 Oct 1425
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- 4 Thomas de Neville [1.1.3.4] b. Abt 1366 d. 14 Mar 1406
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- 4 Elizabeth Neville [1.1.3.1]
- 3 3rd Baron Percy Henry de Percy [1.1.1]
- 2 Henry Percy, II [1.1]