Siward Digera Sigurd Ealred Syward Northumberland
Birth date:
1030
Birth place:
Perth, Perthshire, , Scotland
 
Death date:
  1055
Death place:
  York, Yorkshire, , England

Northumberland Family

Parents:
Father: Ulf Thorgilsson
Mother: Margaret Estrid
Spouse:
Spouse: Aelflaed II (Countess of Bernicia) of Northumberland
 
Siblings:
Biorn Ulfiusson Estrids Denmark
Githa Ulfiusson
Gytha Ulfsdotter
Niels Estridsen
Niels Estridsen
Svend II Estridsen Ulfsson
Bjorn Ulfiusson
Svend II Ulfsson (Estridssen) King of Denmark
Asbjorn Ulfsson
Bjorn Bearsson
Knud Den Hellige
Svend Sweyn II Ulfsson King of Denmark
Biorn Ilsiusson
Biorn Ulfsson
Siward Ulffson
Eadnoth Ulfsson
Sweyn II Estridsson Ulfsson
Biorn Bjorn Ulfiusson Estridsen
Bjorn Ulfiusson
Siward Digera Sigurd Ealred Syward Northumberland
Children:
Sibyl Aelflaed or Sybilla Bearsson Fitzsiward of Northumbria Queen of Scotland
Waltheof Earl of Northumberland