The Story of the Fairy Changeling

Some murders occurred because of a belief that the mentally ill were actually fairy changelings. People would believe that if your relative is experiencing severe mental illness, that that's not your relative, that's a changeling and you must kill it with a crucifix or with some holy instrument. So there's a story around glounnegelt that this man found himself drawn into a football match with the fairies. He went mad, he went insane. But then he went to glaunne gilt, and he drank the water, and he ate the watercress, and he was cured of his madness.