Nielsen Hayden genealogy
Family: Simon I de Senlis / Maud of Northumberland (F6027)
m. Bef 1091Waltheof (1027-1076) 
|
Judith of Lens (1054-1087)
|
Alice of Northumberland ( -1127)  |
| Simon I de Senlis ( -1111)
|
| Maud of Northumberland (1072-1130)
|
| Maud de Senlis ( -1159) |
| St. Waltheof ( -1159) |
| Simon II de Senlis (1103-1153) |