For instance, the widespread motif of a father who wishes to marry his own daughter—appearing in such tales as "Allerleirauh", "Donkeyskin", "The King who Wished to Marry His Daughter", and "The She-Bear"—has been explained as his wish to prolong his reign, which he would lose after his wife's death to his son-in-law. More mildly, the hostility of kings to their daughter's suitors is explained by hostility to their successors. In such tales as "The Three May Peaches", "Jesper Who Herded the Hares", or "The Griffin", kings set dangerous tasks in an attempt to prevent the marriage.