Question: Haraldr Guðrøðarson ruled a kingdom that was located in what body of water?
Sentence (from "Haraldr Guðrøðarson"): He was the son of Guðrøðr Rǫgnvaldsson, King of the Isles, son of Rǫgnvaldr Guðrøðarson, King of the Isles.
Relevant evidence: No