Tylwulf was a friend of Siggard who lived at Bear's Hill in Entsteig. Tylwulf had fallen in love with Emilye, in his youth. But Emilye married Siggard. Tylwulf became husband of Camylle time later.
When the demon force led by Assur invaded Entsteig, and reached Bear's Hill village, ten of the villagers pledged their allegiance to the demons to be spared their lives in exchange of sacrificing all the villagers, betraying their friends and family. Tylwulf and his wife Camylle were among the betrayers.