The oldest child of the ruler has a -10 opinion penalty towards their parent, all other children set to inherit have a +10 opinion boost, all other dynasty members have a +10 opinion boost, and all vassals have a +5 opinion boost. There is no prestige penalty for having unlanded sons, and Gavelkind confers a 30% increase in max. If the ruler has no children that can inherit, the law reverts to Primogeniture. With Gavelkind succession, the titles of the ruler are divided among his/her children.