Descendancy for Robert I 1St Baron De Clifford, Sir: The Valley And Fitzgerald Family Trees

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1 Robert I 1St Baron De Clifford, Sir ^[1] b. 1 Apr 1274 d. 25 Jun 1314
- Baroness Maud De Clare b. Abt 1280 d. 1 Feb 1324 and 1325
  - 2 Idoine De Clifford, Lady Alnwick ^[1.1] b. Abt 1300 d. 24 Aug 1365
    - 2nd Baron Percy Henry De Percy b. 6 Feb 1301 d. 25 Feb 1352
      - 3 Margaret De Percy ^[1.1.1] b. Abt 1318 d. 3 Sep 1376
      - 3 Eleanor De Percy ^[1.1.2] b. Abt 1320 d. 18 Oct 1361
      - 3 Baron Percy Henry De Percy ^[1.1.3] b. 1321 and 1322 d. 18 May 1368
        
        Lady Mary Plantagenet b. Abt. 1320 d. 01 Sep 1362
        
        4 1st Earl of Northumberland, 4th Baron Percy, King of Mann Henry Percy ^[1.1.3.1] b. 10 Nov 1341 d. 20 Feb 1408
      - 3 Richard De Percy ^[1.1.4] b. Abt 1322 d. Deceased
      - 3 Isabel De Percy ^[1.1.5] b. Abt 1322 d. Bef 25 May 1368
      - 3 Roger De Percy ^[1.1.6] b. Abt 1324 d. Deceased
      - 3 Robert De Percy ^[1.1.7] b. 1326 d. Deceased
      - 3 Thomas De Percy, Bishop Of Norwich ^[1.1.8] b. 1328 d. 1369
      - 3 William De Percy ^[1.1.9] b. 1332 d. Deceased
      - 3 Maud De Percy ^[1.1.10] b. Abt 1344 d. Bef 18 Feb 1378 and 1379
        
        3rd Baron Neville, of Raby Sir John Neville b. Abt 1331 d. 17 Oct 1388
        
        4 Alice De Neville ^[1.1.10.1] b. Abt 1359 d. 20 Jun 1433
        
        4 Thomas De Neville, Baron Furnival ^[1.1.10.2] b. Abt 1362 d. 14 Mar 1406 and 1407
        
        4 Idoine De Neville ^[1.1.10.3] b. Abt 1363 d. Deceased
        
        4 4th Lord Neville, of Raby, 1st Earl of Westmorland Sir Ralph de Neville ^[1.1.10.4] b. Bef 1364 d. 21 Oct 1425 [ =>]
        
        4 Maud De Neville ^[1.1.10.5] b. Abt 1367 d. Deceased
        
        4 Abbess of Minor Eleanor De Neville ^[1.1.10.6] b. 1369 d. Aft 1441
        
        4 Elizabeth Neville ^[1.1.10.7] b. Abt 1369 d. Deceased
        
        4 Miss Neville ^[1.1.10.8] b. Abt 1371 d. Deceased
  - 2 Roger IV 2Nd Baron De Clifford, Sir ^[1.2] b. 21 Jan 1299 and 1300 d. 23 Mar 1321 and 1322
  - 2 Margaret De Clifford ^[1.3] b. Abt 1303 d. 8 Aug 1382
  - 2 Robert II 3Rd Baron De Clifford, Sir ^[1.4] b. 5 Nov 1305 d. 20 May 1344
  - 2 John De Clifford ^[1.5] b. Abt 1307 d. Deceased
  - 2 Andrew Clifford ^[1.6] b. Abt 1309 d. Deceased