Sir Henry IV 2nd Baron Percy of Alnwick de Percy |
| Born | 06 Feb 1301 | Leconfield, Yorkshire, England |
| Died | 26 Feb 1352 | Warkworth Castle, Northumberland, England |
| Buried | ||
| Married | 1314 | Yorkshire County, England |
| Father | Sir Henry III 1st Baron Percy of Alnwick de Percy | F270 Group Sheet | |
| Mother | Eleanor FitzAlan | F270 Group Sheet | |
Idonea Baroness Percy de Clifford |
| Born | 1303 | Appleby, Westmoreland, England |
| Died | 24 Aug 1365 | Beverley, Yorkshire, England |
| Buried | ||
| Father | ||
| Mother | ||
Child 1 | MaleSir Henry V 3rd Baron Percy of Alnwick de Percy |
| Born | 1322 | Alnwick Castle, Northumberland, England |
| Died | 17 Jun 1368 | Alnwick Castle, Northumberland, England |
| Buried |
Eleanor de Percy |
| Born | 1326 | Alnwick, Northumberland, England |
| Died | 1368 | Henham, Essex, England |
| Buried |
Isabel de Percy |
| Born | 1326 | Alnwick Castle, Northumberland, England |
| Died | 25 May 1368 | Alnwick, Northumberland, England |
| Buried | ||
| Spouse | Sir William 1st Lord de Aton | F1687 | |
| Married | 1340 | Alnwick, Northumberland, England |
Maud Baroness Neville de Percy |
| Born | 1335 | Alnwick Castle, Northumberland, England |
| Died | 18 Feb 1376/77 | Raby Castle, Durham, England |
| Buried |