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Siward Biornsson

Siward was born in 1020 in York, Yorkshire, , England.¹ Siward's father was Biorn Ulsiusson and his mother is Flicka Dansk. His paternal grandparents were Ulf Thorgilsson and Estrid Svendsdatter. He was an only child. He died at the age of 35 in 1055 in York, Yorkshire, , England.¹

Ancestor Pedigree Chart
- Ulf Thorgilsson
  - b.1000 in Halland, Sweden d.22 1027 in Roskilde, Denmark
  
  Biorn Ulsiusson
  - b.1021 in Denmark d.1046 in Denmark
  
  Geva Knudsson ^*
  - b.0840 in Jellinge,Vojle,,Denmark d.0940 in Jellinge,Vejle,,Denmark
  
  Harald Gormsson
  - b. in Arque, Seine Inferieure, Normandy, France d.01 Nov in Gormshoj, Jellinge, Vejle, Denmark
  
  Thyre Danebod
  - b. in Denmark d. in Jellinge, Vejle, Denmark
  
  Sveyn I Haraldsson
  - b.0965 in Jelling, Vejle, Denmark d.02 Feb 1014 in Gainsborough, Lincolnshire, , England
  
  Estrid Svendsdatter
  - b.0997 in Denmark d.Sep 1047 in Cathedral, Roskilde, Roskilde, Denmark
  
  Swietoslava Sweden Denmark
  - b.0970 in Poznan, Lubelskie, Poland d.1014 in Gainsborough, Lincolnshire, England
  
  Siward Biornsson
  - b.1020 in York, Yorkshire, , England d.1055 in York, Yorkshire, , England
  
  Flicka Dansk
  
  ^*There are earlier generations for the ancestor(s) indicated. See their page(s) for details (click name)

Personal Timeline

Details of Siward's family with Aelfled Bernicia

¹ Public Member Trees @ Database online.
Source/Citation Public Member Trees @ Database online.