Sigurd Ribbung, nobleman and pretender to the throne (born 1203)
Helle, Knut Under kirke og kongemakt, 1130-1350 (Oslo: 1995)
Sigurd | The Legend of Sigurd and Gudrún | Sigurd Pettersen | The Story of Sigurd the Volsung and the Fall of the Niblungs | Sigurd Lewerentz | Sigurd the Stout | Sigurd Syr | Sigurd Rushfeldt | Sigurd Grieg | Sigurd Roll | Sigurd Risting | Sigurd Ribbung | Sigurd Lucassen | Sigurd Hofmann | Sigurd Hoel | Sigurd Haakonsson | Sigurd Christiansen |