Thorn was a paladin of the Silver Hand, he remembers Uther the Lightbringer in everyone of his battles. He decided to join forces with Maddox to free Andorhal of the Scourge. During their journey they stayed in the farm of Halsand, whom Maddox tried to convince to join in his ranks. Thorn was against it because Halsand had a family, but Halsand still joined the party.
When he saw the few troops he didn't want to battle, but he was convinced by the Maddox with money. Uther's Tomb was visited before the battle, where he was motivated to fight, yelling "We do it for Uther... and for Andorhal!"
He is a good hearted and humble person, he didn't want to accept much from the farmers as he knew they were poor. He didn't like the the fact that Halsand joined the battle at Andorhal as he had a family. Thorn even sacrificed his life so that Halsand could escape. Although he had very different personality than Maddox he decided to follow him as both were fighting for a good cause.