| William de Percy & Alice de Tonbridge | |
| Husband | Wife |
| William de Percy | Alice de Tonbridge |
|
b: 1112 Alnwick, Northumberland, England d: 1168 | |
| Parents | |
| William "Algernon" de Percy (~1040 - 1096) | |
| Emma de Port | |
| Children (Family Detail) | |
| Agnes de Percy | - b: 1134 |
| William de Percy & Adelizia de Clare | |
| Husband | Wife |
| William de Percy | Adelizia de Clare |
|
b: 1112 Alnwick, Northumberland, England d: 1168 |
b: about 1115 |
| Parents | |
| William "Algernon" de Percy (~1040 - 1096) | Earl Richard FitzGilbert de Clare (1084 - 1136) |
| Emma de Port | Alice de Mechines (1088 - 1128) |
| Grand Parents | |
| Earl Gilbert de Clare (<1066 - 1114/1117) | |
| Adeliza de Clermont (~1065 - >1117) | |
| Earl Ranulph de Mechines | |
| Children (Family Detail) |