| Sibyl Fitzsiward |
| Father: Seward Earl of Northumbria | Mother: Mrs Seward Countess of Northumbria |
| Born:
abt 1014 Scotland |
Died:
abt 1040 |
| Spouse: Duncan I King of Scotland | Married:
abt 1030 Scotland |
| Children: Malcolm III "Ceanmore" "Long- Neck" King of Scotland Donald "Bane" III Scotland Melmare (Melkofr) Earl Atholl Duncan Earl of Moray | Brothers & Sisters: |