A Wishing Cell. -- At St. Govain in Pembrokeshire there is a “wishing cell” in the rock. It is said that any one who turns round inside wishing for the same thing all the time, will get it before the end of the year. The place is still visited by young people who are in love.
p157 in
Notes on Welsh Folklore
Jonathan Ceredig Davies
Folklore, Vol. 30, No. 2. (Jun. 30, 1919), pp. 156-157.