Guthlac of Crowland

"...his heart burned with a hungry longing to seek solitude in the wilderness. In the course of a few days he received the required consent of his superiors and, beginning that long journey which was to end in eternal bliss, set out to find his place of retreat. No settler had been stouthearted enough to live alone here on account of the phantom-demons that infested the site." - Felix's Life of St. Guthlac [730–740AD]