Guthorm Sigurdsson

Guthormr or Guttormr was according to traditions current in Iceland in the eleventh and twelfth centuries, a noble of Danish origin operating in Norway and the maternal uncle of Norway's first king, Harald Fairhair. By various sources he is said to have been the son of Sigurd Hart, brother of Ragnhild Sigurdsdotter and the descendant of Ragnar Lodbrok. Several sources gives him the title dux and hertỏga both meaning "duke".

Family

Sources on Guthorm describes him as the son of Sigurd Hart and younger brother of Ragnhild Sigurdsdotter. Ragnhild Sigurdsdotter's parentage is controversial as two differing accounts appear in medieval genealogy varies in her parentage. He is alternatively described as the daughter of his son Sigurd Snake-in-the-Eye, while others describe her as the daughter of Sigurd Hart and Sigurd Snake-in-the-Eye's granddaughter, adding an additional generation. Attempts to fit the chronology of the sagas with history does not work with the additional generation between Sigurd Snake-in-the-Eye and Harald Fairhair.