Nielsen Hayden genealogy
Ancestors of Björn Jernside
Abt 1100 - 1134 (~ 34 years) ┌── Thorkill Sprakalaeg ( - Abt 1009)
┌── Ulf Thorgilsson ( - 25 Dec 1026 Trinity Church, Roskilde, Zealand, Denmark)
┌── Swein II Estridsson, King of Denmark (Abt 1026 England -
│ Apr 1074 Søderup, near Åbenrå, Sonderjylland, Denmark)
│ Apr 1074 Søderup, near Åbenrå, Sonderjylland, Denmark)
│ │ ┌── Swein Forkbeard, King of England and Denmark (Abt 960 - 3 Feb 1014 Gainsborough,
│ │ │ Lincolnshire, England) =>
│ │ │ Lincolnshire, England) =>
│ └── Estrid, Queen of Denmark (Abt 990 - Between 1057 and 1073)
│
┌── Erik I, King of Denmark (Abt 1060 Slangerup, North Zealand, Denmark - 10 Jul 1103 Paphos, Cyprus)
┌── Harald Kesja (Abt 1080 - 4 Jun 1134)
│
Björn Jernside (Abt 1100 - 4 Jun 1134)
│
│ ┌── Sigurd Syr (Abt 960 - 1018)
│ ┌── Harald Hardrada, King of Norway (Abt 1015 -
│ │ 25 Sep 1066 Stamford Bridge, Yorkshire, England)
│ │ 25 Sep 1066 Stamford Bridge, Yorkshire, England)
│ │ └── Asta Gudbrandsdottir =>
│ │
│ ┌── Olav III, King of Norway (Abt 1050 - 22 Sep 1093 Håkeby, Tanum, Västra Götaland, Sweden)
│ │ └── Thora Thorbergsdatter (1025 - ??)
│ │
│ ┌── Magnus III, King of Norway (Abt 1070 - 24 Aug 1103 Ireland)
│ │ └── Thora Jonsdatter
│ │