olaf died in 1006, and olaf's widow thorgerd subsequently directed a number of revenge-killings herself, including that of thorkel, a man who had witnessed kjartan's death but been indifferent to it and had not intervened. bolli was killed by olaf's sons and their allies in a raid led by thorgerd. some twelve years later, gudrun, with the help of her friend snorri goði, had a number of bolli's murderers killed in revenge.