| Male Sir Henry de Percy, KG, Lord Percy |
| Birth | 6 Feb 1300 | Leconfield, Yorkshire, England |
| Death | 26 Feb 1351 | Warkworth, Northumberland, England |
| Burial | Alnwick, Northumberland, England |
|
| Marriage | 1314 [2] | Northumberland, England [2] |
| Father | Sir Henry de Percy, Lord Percy | F5491 Group Sheet | |
| Mother | Eleanor de Arundel | F5491 Group Sheet | |
| Female Idonea de Clifford |
| Birth | ||
| Death | 24 Aug 1365 | England |
| Burial | Beverley, Yorkshire, England |
|
| Father | Sir Robert de Clifford, Lord Clifford | F2938 Group Sheet | |
| Mother | Maud de Clare | F2938 Group Sheet | |
| Male + Sir Henry de Percy, Lord Percy |
| Birth | Between 1322 and 1325 | Seamer, Yorkshire, England |
| Death | 18 May 1368 | |
| Burial | Alnwick, Northumberland, England |
|
| Spouse | Mary Plantagenet | F7911 | |
| Marriage | 4 Sep 1334 | Tutbury Castle, Staffordshire, England |
| Spouse | Joan Orreby | F7912 | |
| Marriage | May 1365 | |
| Female + Maud de Percy |
| Birth | ||
| Death | 1378/79 | |
| Burial | Durham Cathedral, Durham, County Durham, England |
|
| Spouse | Sir John de Neville, KG | F5435 | |
| Marriage | Jul 1357 | England |
| Female + Isabel de Percy |
| Birth | ||
| Death | Before 25 May 1368 | |
| Burial | ||
| Spouse | Sir William de Aton, Lord Aton and Vesci | F6201 | |
| Marriage | Before Jan 1326 | |
|
Sources 🟢 Primary Evidence 🟡 Secondary Evidence 🟠Tertiary Evidence 🔴 Unreliable Evidence |
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