| Male Biorn Estrithson ULFSSON |
| Birth | 990 | |
| Death | 1049 | |
| Burial | ||
| Marriage | 1005-1045 [1] | |
| Father | Jarl Ulf THORGILSSON | F6354 Group Sheet | |
| Mother | Margaret Estrid SVENSDATTER | F6354 Group Sheet | |
| Male Earl Siward BIORNSSON |
| Birth | 1012 | Denmark |
| Death | 1055 | (Galmanho), York, England |
| Burial | ||
| Spouse | Aelffedas III Of BERNICIA | F6352 | |
| Marriage | 1033 | |
| Notes | Married:
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