Nielsen Hayden genealogy
Ancestors of Maud of Northumberland
Abt 1072 - 1131 (~ 58 years) ┌── Siward (of Denmark - 1055 York, Yorkshire, England)
┌── Waltheof (1027 of Potton, Bedfordshire, England - 31 May 1076 Winchester, Hampshire, England)
│ (m. Aft Jan 1070)
│ │ ┌── Ealdred of Bernicia (of Bamburgh, Northumberland, England - 1038) =>
│ └── Ælfled of Bernicia
│
Maud of Northumberland (Abt 1072 - Between 1130 and 1131 bur.Scone, Perthshire, Scotland)
│
│ ┌── Lambert II of Boulogne ( - 1054 Phalempin, Nord, France)(m. 1054)
│ │ └── Mathilde of Louvain (Abt 993 - ??) =>
│ │
└── Judith of Lens (Abt 1054 - Aft 1086)(m. Aft Jan 1070)
│
└── Alice of Normandy (Abt 1030 - Bef 1090)(m. 1054)