The Woman Who Survived A Shipwreck, Starvation, And Isolation — The Incredible Story Of Marguerite De La Rocque
— Quirpon Island at the northern tip of Newfoundland, near the Strait of Belle Isle.
— Various islands in the Bradore Bay area of the Labrador coast.
None of these identifications can be established definitively from the available sources.
The sixteenth-century maps that mention “Isle of Demons” are inconsistent in their placement of the name, and none of the contemporary written accounts provide enough geographical detail to narrow the location to a single island.
What the available evidence does establish is that the island was somewhere in the Gulf of St.
Lawrence or its approaches, that it was uninhabited, that it had enough wildlife to support survival through hunting, and that it was in a region visited by Breton fishermen — which is consistent with any of the proposed locations.