[S2994] Sturluson, Snorri, Sturluson-1968, (Dent & Sons, London: 1968), p 75, 106 (Troverdighet: 3).
Snorri says that Gunhild's father was Ossur Tote, not Gorm den Gamle as other sources show. She also had two brothers as shown here as children of Ossur Tote.
[S2990] Sagas of the Icelanders, (Penguin Books: 2000), p 59 (Troverdighet: 3).
Egil's Saga also syas Gunhild's father was Ozur Tote.