Sir Henry III 1st Baron Percy of Alnwick de Percy |
| Born | 25 Mar 1273 | Alnwick, Northumberland, England |
| Died | Oct 1314 | Fountains Abbey, Yorkshire, England |
| Buried | ||
| Married | 1299 | Alnwick, Northumberland, England |
| Father | Sir Henry II 7th Baron Percy de Percy | F390 Group Sheet | |
| Mother | Eleanor de Warenne Plantagenet | F390 Group Sheet | |
Eleanor FitzAlan |
| Born | 1272 | Arundel, Sussex, England |
| Died | Jul 1328 | Scarborough Castle, Yorkshire, England |
| Buried | ||
| Father | ||
| Mother | ||
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 | ||
| Spouse | Idonea Baroness Percy de Clifford | F1738 | |
| Married | 1314 | Yorkshire County, England |