| Male ALAN, Baron, The Great, De Percy |
| Birth | 1067 | Alnwick, Northumberland, England |
| Death | 1135 | Whitby, Yorkshire, England |
| Burial | ||
| Marriage | 1087 | Folkingham, Lincolnshire, England |
| Father | ||
| Mother | ||
| Female Emma de Gaunt |
| Birth | 1069 | Folkingham, Lincolnshire, England |
| Death | 1088 | Folkingham, Bourne, Lincolnshire, England |
| Burial | ||
| Father | Gilbert, NEPHEW TO QUEEN MAUD, De Gaunt | F3822 Group Sheet | |
| Mother | Alice DeMontfort | F3822 Group Sheet | |
| Male Baron William De Percy |
| Birth | 1088 | Alnwick, Northumberland, England |
| Death | 1175 | Tonbridge, Kent, England |
| Burial | ||
| Spouse | Alice de Ros | F2684 | |
| Marriage | ||
| Male Walter Rugemond, Baron, DePercy |
| Birth | 1089 | Alnwick, Northumberland, England |
| Death | 1175 | Tonbridge, Kent, England |
| Burial |
| Male Alan, The Bastard, illegitimate, De Percy |
| Birth | 1096 | Alnwick Castle, Alnwick, Northumberland, England |
| Death | ||
| Burial |