Constantine does not figure strongly in the Arthurian romance traditions or prose cycles. He is absent from the French Vulgate and Post-Vulgate Cycles, in which Lancelot and his kin kill off Mordred's sons, and no successor to Arthur appears. Some scholars find this omission significant. Rosemary Morris suggests these versions downplay the issue of a designated heir to Arthur to heighten the stakes of Mordred's usurpation and to magnify Lancelot's role in the story. Richard Trachsler writes that the exclusion of an heir adds a sense of finality to the Arthurian story after Arthur's death.