Original sentence: His successor was a man named Thored, but it is not clear whether this was Thored Oslac's son or Thored son of Gunner; historians tend to favour the idea that Thored the sucessor was son of Gunner
Edited sentence: His successor was a man named Thored, but it is not clear whether this was Thored Oslac's son or Thored son of Gunner; historians tend to favour the idea that Thored the successor was son of Gunner