| Father | Male Henry Percy |
| Born | 06 Feb 1301 | Alnwick, Northumberland, England |
| Died | 17 Feb 1352 | Alnwick, Northumberland, England |
| Buried | ||
| Married | ||
| Father | Henry III Percy | F59389 Group Sheet | |
| Mother | Eleanor Fitzalan | F59389 Group Sheet | |
| Mother | Female Idonea de Clifford |
| Born | 06 Feb 1299 | Alnwick, Northumberland, England |
| Died | 24 Aug 1365 | Alnwick, Northumberland, England |
| Buried | ||
| Father | Robert I Lord Clifford De Clifford | F25029 Group Sheet | |
| Mother | Maud De Clare | F25029 Group Sheet | |
| Child 1 | Female Eleanor de Percy |
| Born | cir 1317 | |
| Died | ||
| Buried | ||
| Spouse | John FitzWalter | F193957 | |
| Married | 1344 | |
| Child 2 | Male Henry Percy |
| Born | cir 1320 | Alnwick, Northumberland, England |
| Died | ||
| Buried | ||
| Spouse | Mary Plantagenet | F194028 | |
| Married | Sep 1334 | Staffordshire, England |
| Child 3 | Female Maud of Percy |
| Born | cir 1330 | Alnwick, Northumberland, England |
| Died | 1378 | Durham, England |
| Buried | ||
| Spouse | John of Neville | F59338 | |
| Married | Jul 1357 | |