Melisandre converts Stannis 's wife Selyse to her religion, along with several other members of Stannis ' court. Stannis ' maester Cressen, fearing Melisandre 's power and her influence over him, tries to assassinate Melisandre with poison in a murder - suicide, and although Melisandre drinks most of the poison her powers allow her to survive. When Stannis ' brother Renly also declares himself king, Melisandre has a vision of Renly defeating Stannis ' host at King 's Landing. She convinces Stannis to impregnate her, giving birth to a shadow demon that kills Renly. She also births another demon that kills Storm 's End 's castellan, Ser Cortnay Penrose, when he refuses to yield Storm 's End. Ser Bryce Caron convinces Stannis to leave Melisandre at Dragonstone during the Battle of the Blackwater, which ends in Stannis ' defeat. During the battle, Ser Garlan Tyrell dons Renly 's armor and leads the Tyrell - Lannister vanguard, thus fulfilling Melisandre 's earlier prophecy.
what did the lady in red give birth to
a shadow demon