Þóra Magnusdóttir married an Icelander and moved to Iceland. Her husband was a powerful Icelandic chieftain Loftur Sæmundsson son of Sæmundur fróði Sigfússon. Their son was Jón Loftsson. A direct descendant of Loftur and Þóra was Þuríður Sturludóttir (born 1228) who married Hrafn Oddsson (born 1225) a direct descendant of Sakallagrímur Kveldúlfsson (Skalla-Grímr) father of skald and viking Egill Skallagrímsson. In their son Jón korpur Hrafnsson (born 1255) the two warring clans of Haraldur hárfagri and Skallagímur Kveldúlfsson were genetically united in Iceland.
Haraldur hárfagri Hálfdánarson (Harald Fairhair) (850): Descendent of the Ynglings - King over Norway Sigurður hrísi Haraldsson (880) Hálfdán Sigurðsson (930) Sigurður sýr Hálfdánarson (970) Haraldur harðráði Sigurðsson (Harald Hardråde) (1046-1066): King over Norway Ólafur kyrri Haraldsson (Olaf Kyrre) (1066-1093): King over Norway Magnús berfættur Ólafsson (Magnus Barefoot) (1073-1103): King over Norway Þóra Magnúsdóttir (1100) Jón Loftsson (1124-1197) Sæmundur Jónsson (1154-1222) Sólveig Sæmundsdóttir (1200-1244) Þuríður Sturludóttir (1228-1288) Jón korpur Hrafnsson (1255)
Islendingabók (Book of Icelanders): http://www.islendingabok.is
Konungasögur (Kings' sagas)
Egils saga Skallagrímssonar (Egils saga)