St Eilian had his cell at Llaneilian on Angelsey; his shrine (‘myfyr eilan’) was inside a once detached chapel built over the cell. His shrine was also a place of healing but it required the sufferer to get inside it – which was a difficult thing to do. There is a holy well at the base of a cleft in the rock about 15 minutes walk to the seashore; it was renowned for healings and attracted many pilgrims.
