Siward BIORNSSON, (EARL OF NORTHUMBERLAND)

Birth:
Abt 1020
of Denmark
Death:
1055
York, Yorkshire, England
Burial:
Galmanho Abby, York, Yorkshire, England
Marriage:
Abt 1033
of Northumberland, England
Notes:
                   Complete Peerage vol 5 Ch p 736, vol 6 p 638, vol 9 p 701-03, 705 (GS #942
D24c); Wurts' Magna Charta vol 1-2, p. 189, vol 7 p 2029-30 (GS #942 D22w);
Plantagenet Ancestry, p 21, 141 (GS #Q940 D2t); The Battle Abbey Roll vol 3 p
122 (GS #942 D2bb); Dict of Nat'l Biog vol 16 p 158, vol 26 p 241, vol 52, p
318-19, vol 58 p 17, vol 59 p 265-66 (GS #Ref 920.042 D561n); Anglo-Saxon
Bishops, Kings & Nobles, Searle, p 370-71, 374-75, 455 (GS #942 D22swy); Stazn
zur Gesch der Europ Staa vol 1-2, Tab 67 (GS #940 D22f); Noble British Fam vol
2, Fam of Dunbar, Fam of Neville (GS #Folio 942 D2dh); Encyclopedia Americana
vol 18 p 163 (GS #Ref 031 Am 35, 1945); The Scots Peerage vol 1 p 1 (GS #941
D22p)l Betham's Gen Tables, Tab DCXIX (GS #Q929.2 B465a).
Aelfled (Elfleda) NORTHUMBERLAND)
Birth:
Abt 1027
of Bernicia, Northumbria, England
Father:
Aldred of Bernicia NORTHUMBRIA)
Mother:
Notes:
                   Ancestral File
Children
Marriage
1
Waltheof II NORTHUMBERLAND)
Birth:
Abt 1046
of Northumberland, England
Death:
31 May 1076
Winchester, Hampshire, England
Notes:
                   Complete Peerage vol 1 p 351-52, vol 4, App H, Ch IV, vol 5 Chart p 736, vol 6
p 638-40, 643, vol 9 p 703, 705-06 (GS #942 D24c); Baker's Nrthmp vol 1 p 121
(GS #Q942.55 H2ba); Battle Abbey Roll vol 2 p 35, vol 3 p 122-23 (GS #942
D2bb); Plantagenet Ancestry p 21, 117, 141 (GS #Q940 D2t); Dict of Nat'l Biog
vol 52 p 318-19, vol 58 p 17, vol 59 p 265-67 (GS #Ref 920.042 D561n); Wurts'
Magna Charta vol 1-2 p 189, vol 3 p 428, vol 5 p 115, vol 6 p 1741, vol 7 p
2029-30 (GS #942 D22w); Hist of Yrkshr, Preface (GS #Q942.74 D2ha); Noble
British Fam vol II, Fam of Neville (GS #Folio 942 D2dh); Searle's Anglo-Saxon
Bishops, Kings & Nobles p. 374-75, 455 (GS #942 D22swy).
2
Sybil of NORTHUMBERLAND
Birth:
Abt 1048
of Northumberland, England
Death:
1070
Duncan I SCOTLAND) 
Marr:
Abt 1066
of Northumberland, England 
Notes:
                   Ancestral File
3
Osbeorne of NORTHUMBERLAND
Birth:
Abt 1050
of Northumberland, England
Death:
 
Marr:
 
Notes:
                   Ancestral File
FCID:2052:6075
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Siward Biornsson, (Earl of Northumberland) - Aelfled (Elfleda) Northumberland)

Siward Biornsson, (Earl of Northumberland) was born at of Denmark Abt 1020. His parents were Biorn (Bjorn) Ulfiusson, (Earl of Denmark) and Mrs. Bjorn Ulfiusson.

He married Aelfled (Elfleda) Northumberland) Abt 1033 at of Northumberland, England . Aelfled (Elfleda) Northumberland) was born at of Bernicia, Northumbria, England Abt 1027 daughter of Aldred of Bernicia Northumbria) and .

They were the parents of 3 children:
Waltheof II Northumberland) born Abt 1046.
Sybil of Northumberland born Abt 1048.
Osbeorne of Northumberland born Abt 1050.

Siward Biornsson, (Earl of Northumberland) died 1055 at York, Yorkshire, England .