Historians have understood from the beginning of Færeyinga Saga in Flateyjarbók that Grímur Kamban settled in the Faroes when Harald Fairhair was king of Norway (c.872-930 AD).
The protagonist and antihero of the story is Þrándr Þorbjarnarson (in Modern Faeroese Tróndur í Gøtu), who lives at Gøta on Eysturoy.
Sigmundr and Þórir are eventually freed by their owner, and they subsequently enter the service of Hákon illi, the Jarl of Hlaðir, for whom they fight in a series of campaigns, most notably the Battle of Hjörungavágr against the famous Jomsvikings.
Sigmundr and Þórir escape by leaping into the sea, and they subsequently attempt to swim all the way to Suðuroy, but the effort pushes them to the limits of their endurance.
Þórir drowns just offshore, and although an exhausted Sigmundr manages to make it onto the beach he is then murdered by a local farmer, Þorgrímr inn illi, who desires his gold ring.
Eventually he proposes a marriage between Leifr and Sigmundr’s daughter Þóra, which the latter accepts on condition that Þrándr track down her father’s killer.
Þrándr, his nephew Sigurðr and Leifr continue to rule the Faeroe Islands for many years, extending through the reigns of the Norwegian kings Óláfr Haraldsson and Sveinn Knútsson.
However, over time Sigurðr becomes overconfident, listening less and less to the advice of the cunning Þrándr, and he also becomes increasingly impetuous and violent, committing a series of brutal killings (including that of Leifr Þórisson, son of Þórir Beinisson) which make him unpopular with the islanders.