Siward Bjornsson Northumbria 
Siward was born before 1015 in Scandinavia.1 He died in 1055 at St. Olave's Church, York.1 General Notes
Source: Wikitree.com - (Huntingdon-325) - Waltheof Huntingdon
Name: Siward Bjornsson (Northumbria) of Northumbria
Source: Wikitree.com - (Northumbria-1) - Siward Northumbria
Name: Siward Bjornsson [uncertain] of Northumbria formerly Northumbria
Title: "Earl of Northumbria, Sigurd, Digera, Seward"
Details of Siward's family with ᴁlfflᴂd Bernicia
1 Wikitree.com - (Northumbria-1) - Siward Northumbria
Further source/citation:
Wikitree.com - (Huntingdon-325) - Waltheof Huntingdon
Further source/citation:
Wikitree.com - (Huntingdon-325) - Waltheof Huntingdon
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