There is an old story told which happened when St Kevin lived in Glendalough.

One day he met a woman on "the Green Road" in Glendalough, and she was carring some loaves of bread in her apron she said if he asked for bread I will say they are stones, and he reading her mind stopped her and asked her for bread. She said they were stones Saint Kevin said if they are stones that they may turn into bread. If they are bread that they may turn into stones. When she reached home her apron was full of stones.