Sigurd was the son of unknown parents. The date and place of his birth have not been found.
He died in 1055. The place is not known.
His wife was Ælfled. They were married, but the date and place have not been found. Their three known children were Sybille (c1010-?), Waltheof II Siwardson (c1046-1076) and Osberne (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 1055 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | FROM 1031 TO 1055 | earl of Northumbria |