L226m2727895

Hi guys, im new to this forum, I recently install CM 1.5 patch last month and CM 1.6beta few days ago. There a problem with a quest called"Ah, linger on, thou art so fair!" I dont remember who gave me this quest and right now the quest marker marked on a NPC in Black Oaks but I cant target him. According to wiki its the last quest of the "Faust" chain quest but I definitely didnt start it and now I cant even do it anymore. Here a pic