Speculum Regale ~ Roman
There was a preacher who wanted to spread Christianity through a country but, a clan in that country opposed Christianity. The preacher prayed to God for help to turn the clan in to Christians and to punish them for not listening to the wisdom of prayer. The men of the clan suffered because that night they were turned into wolves. This plan was the wrong thing to do because they were worse than wolves because they had the brains of a human but the speed and fierceness of a wolf and after winter ended they were tured back to human form. Every seven winters, though the same punishment happens to the next generation of the clan.