Warwick is the groundskeeper of Elvesden Manor and the father of Fabian. He catches fairies out in the woods. He does not have the second sight but he uses eye drops like Fabian. In the 13 Curses, he gets trapped in  fairy circle and gets transported to the fairy world. He gets trapped by the Hedgewitch and sees that Red/Rowan is also trapped there. He tells Red how his wife Evanlyn died. In The Thirteen Secrets, Tanya discovers Warwick and Rowan's mom Rose kissing. Fabian later found hair on Warwick's bed that matched Rose's hair. This means that they went in bed together sometimes.