Sigurd Ribbung
Sigurd Erlingsson Ribbung was a Norwegian nobleman and pretender to the throne of Norway during the civil war era in Norway. Wikipedia
Born: 1204
Died: 1226 (age 22 years)
Parents: Erling Steinvegg
Grandparent: Magnus V of Norway
Great-grandparents: Erling Skakke and Kristin Sigurdsdatter