The Welsh were formerly strong in the belief that bells could perform miracles, detect thieves, heal the sick, and the like. In many instances they were possessed of locomotive powers, and would transport themselves from place to place when they had occasion, according to their own sweet will, and without human intervention. It is even recorded that certain handbells required to be tied with the double cord of an exorcism and a piece of twine, or they would get up and walk off in the night.