Nielsen Hayden genealogy
Descendants of Ealdred of Bernicia
- 1038Father: Uchtred (Abt 970 - 1016)
Mother: Ecgfrida
Ealdred of Bernicia (of Bamburgh, Northumberland, England - 1038)
   └─ Ælfled of Bernicia
    Siward (of Denmark - 1055 York, Yorkshire, England)
       └─ Waltheof (1027 of Potton, Bedfordshire, England - 31 May 1076 Winchester, Hampshire, England)
        Judith of Lens (Abt 1054 - Aft 1086)(m. Aft Jan 1070)
           │ + Ralph de Tony (Abt 1081 - 1126 bur.Châtillon-les-Conches Abbey, Eure, Normandy, France)(m. 1103)
           └─ Maud of Northumberland (Abt 1072 - Between 1130 and 1131 bur.Scone, Perthshire, Scotland) =>
            + Simon I de Senlis ( - Between 1111 and 1113)(m. Bef 1091)
            + David I, King of Scotland (Abt 1080 - 24 May 1153 Carlisle, Cumberland, England)(m. Bef Jul 1113)