Complex sentence: He is recorded as the child of Tora Torbergsdatter, who married Harald in 1048, but this conflicts with the report of Magnus as commanding a Norse campaign (see below) in 1058-very unlikely if he was only ten years old.
Split into simpler sentences: He is recorded as the child of Tora Torbergsdatter, who married Harald in 1048. However this conflicts with the report of Magnus as commanding a Norwegian campaign in 1058-very unlikely if he was only ten years old.