| b 1050, Of, Northumberland, , England | 61 09 Apr 1970, !& | Ulf Thorgilsson | ||
| Biorn (Bjorn) Ulsiusson_(Estri | b 0933 | |||
| | b 0975 | Estrid\Margaret | |||
| Siward Biornsson | d 1045 | b 0997 | ||
| |b 1020 | | | |||
| |d 1055 | ||||
| | | ||||
| Osbeorne | Walroef or Siward | > | ||
| | | Uchtred Earl Of Northumberland | Elfeda | | | Aldred Earl Of Northumberland | b 0989 |
| | | |b 1009 | Eggfrida | ||
| Aelfled III | b 0993 | |||
| b 1027 | | | |||