| b 1020, , , , Denmark | d 1055, York, Yorkshire, , England | |||
| Ulf Thorgilsson | ||||
| | b 0933 | ||||
| Biorn (Bjorn) Ulsiusson_(Estri | d 22 Sep 1027 | |||
| |b 0975 | | | |||
| |d 1045 | Estrid\Margaret | |||
| | | b 0997 | |||
| Siward Biornsson | ||||
| |Aelfled III | | | |||
| | | | | |||
| | | ||||
| 1 | < | Waltheof II, Earl Huntington | 2 | Sybil Of Northumberland | 3 | Osbeorne |