The chronicle specifies that Guðrøðr Dond was overcome on "a certain island called the isle of St Columba". This location may be identical to Skeabost Island in the mouth of the river Snizort (). Another possibility is that the isle in question is the now-landlocked island of Eilean Chaluim Chille in the Kilmuir district (). This island once sat in Loch Chaluim Chille before the loch was drained of water and turned into a meadow. There is archaeological evidence to suggest that a fortified site sat on another island in the loch, and that this islet was connected to the monastic island by a causeway. If correct, the fortification could account for Guðrøðr Dond's presence near an ecclesiastical site. According to the chronicle, Óláfr's forces consisted of five boats, and encircled the island after having launched from the opposite shore two from it. This distance, about , suggests that the island is more likely Eilean Chaluim Chille than Skeabost Island, as the former appears to have sat between and from the surrounding shores of Loch Chaluim Chille. In any case, following the clash, the chronicle reports that Guðrøðr Dond's captured followers were put to death, and Guðrøðr Dond was blinded and castrated. It is possible that Óláfr was aided by Fearchar in the strike against Guðrøðr Dond. Certainly, the chronicle's account seems to suggest that Óláfr accumulated his forces whilst sheltering in Ross. Although the chronicle maintains that Óláfr was unable to prevent this torture, and specifically identifies Páll as the instigator of the act, the Icelandic annals record that Óláfr was indeed responsible for his nephew's plight, and make no mention of Páll.