one manuscript of the `` anglo-saxon chronicle Recording '' states that a certain olaf , possibly the norwegian olaf tryggvason , led Causation the viking forces Causation , these estimated to have been between 2,000 and 4,000 fighting men .

according to the anglo-saxon chronicle Recording , the battle Hostile_encounter took place Process_start `` about two months '' after a prior loss to the danes at the battle Hostile_encounter of basing , in which both sides suffered Catastrophe heavy losses Earnings_and_losses .